Rating: 
Summary: Wrong finger layout
Review: I have been in love with the Trackman Vista for years, but they have long since gone out of production, and my last one died, so I needed a replacement. If Logitech made an updated version with optical tracking I would instantly buy enough for a lifetime.This one comes close, and has several good features: Wheel, 3 buttons easily reached by thumb, ball almost exactly same size and weight as the Trackman Vista (no need to change a good design; the oversized ball in FX was a mistake), precise tracking, etc. But it has this strange 30-45 degrees wrong orientation. And the wheel is a litte hard to reach with any fingertip. And there is only one button to the right of the ball, the Trackman Vista had two, which was right. That is, until you realize that Logitech's idea of finger layout: Thumb: 3 side buttons
2. finger: Wheel
3. and 4. finger: Ball
5. finger: Right button Try this and all criticism is moot. The angle is right, and all the buttons are in the right place. It is just the wrong layout. The 2. finger ("index"?) is the most sensible, flexible and precise we have, so it should be reserved for the ball. Thumb is reserved for side buttons. That leaves you with at least two fingers to the right of the ball, and none to the left. Logitech should move the wheel to the right of the ball, and I will buy a stack of them. For now I will try to get used to this one.
Rating: 
Summary: This trackball ROCKS
Review: I have been using it for a while and its awesome. I do a lot of data crunching and I love how you can set up your copy/paste to the two buttons next to your main "Left-Click" button. Makes it so much more easier. My third button is set to (alt-tab)..makes it easier to jump from one window to another...and all this from my mouse and without taking my hands-off it.
The trackball is very accurate and I have it setup very sensitive, so I can rest my hand move around the pointer easily. It takes some time to get used to this type of pointing device..but once you settle down. Its Awesome. The Wireless works great too. (but you really don't need wireless cause its Trackball)
Here is my current setup. Since it is so helpful, I would like to share it:
Button 1: Explore MY Computer
Button 2: Quick Switch (basiclly Alt-tab)
Button 3: Close application
Button 4: Recall last Application
Button 5: Paste
Button 6: Left-Click
Button 7: Copy
Button 8: Right-Click
I have the same setup at home on Logitech MX700 Cordless Optical Mouse(930754-0403). It has 8 buttons as well. It takes a little while to remember which button does what, but once you have it down...you get things fast!!!
Rating:
Summary: The Best Trackball
Review: I just purchased this trackball, and I love it. No matter where I place it, it works flawlessly. It is even good for playing games, which I thought it would never be good at. I have recommended this product to all my friends, and some of them have bought it, and they love it also.
Rating:
Summary: State of the Art for the Trackball user
Review: I just received this Trackman and have been using it for about an hour. It is excellent. The ball is smooth, precise and responsive. I bought the Microsoft version first and returned it because the ball rolled like it was a studded snow tire.
The buttons will take some getting used to but it is worth it.
Rating:
Summary: Support For Linux!!!
Review: I just wanted to write that there is linux support to correct the orientation just like in Microsoft Windows. Someone has posted on another site that if you add the line 'Option "AngleOffset" "-45" ' to your XF86Config file, for this mouse (/dev/input/mouse), then it will correct the orientation by -45 or whatever angle you specify. It does correct the orientation. Now, you can purchase this mouse no matter what OS you run on your PC! It is the best cordless trackball out there! Note, I am running Redhat 9.0 with xfree86 4.3.
Rating:
Summary: Best one I've ever found
Review: I love it. I like Logitech because the last trackball I had came down with a problem and, rather than fix it, Logitech just sent me a new hot off the assembly line model. This is the model that replaced the one I had and I need one that is a finger-operated ball. With arthritis in my fingers and moreso in my thumbs, there were very few trackballs to pick from. I'm so glad that ergonomics has been applied to items we use so often. This trackball is cordless and engineered so you can be leaning back in your chair even 6 feet away and use it accurately. You don't have to keep moving it around like a mouse, you can have it in any position and just move the little red ball with your fingers while your hand rests on the desk or in your lap - wherever you are most comfortable with it. It doesn't need to be on a mousepad and doesn't need to even be facing the computer. I also have carpal tunnels and fibromyalgia which affect my hands and fingers and wrists and arms. This is a blessing from above. It has so many buttons with so many options to which you can set it, it makes it fun to change them every once in a while. Just so you remember how you reset them. I still don't use them all, but they are there if I want them. Two buttons are close together and, knowing me and how I can slip my finger over too far, I have both buttons set to be double clicks and don't have to worry about it. Another good thing about the design of this trackman trackball is that the side of your hand is resting on the desk, rather than having to hold it up to operate it. I sure wish these had been out when I was in the working world. I highly recommmend them to anyone even with healthy hands so they don't get to be like mine. It is so easy to keep clean, and to clean it; and, it only takes two AA batteries which last a long time. I use it 10 to 14 hours a day and my hands even feel better than they did before I got this Logitech Optical Trackman. It is the most ergonomically designed one I have seen and used so far. Give it a try, what do you have to lose? I think you'll be pleasantly surprised with it's looks, handling, options, and performance.
Rating:
Summary: Super Mouse
Review: I love this mouse! Logitec has a real winner here. Our cat ate the tails off of both of our corded mice, but fortunately for me I'd already purchased one of these. It was an easy plug, load and play device. It performs flawlessly. I've had it for six months and would never go back. I have another model logitec cordless track ball with a thumb operated , and smaller ball on a different computer. It's twitchier & easier to overshoot a target on the screen. The index finger actually has more dexterity than the thumb. Thumbs are good for clamps but not as good for manipulation. This one is vastly superior. I just bought a second one for backup in case this one fails. I tried it left handed based on another review and while it did not fit the hand as well, it was still easy to use. The thumb still operates the same three primary buttons. The little finger still operates the same button. The only real difference is tha I found myself operating the track ball with the space between the first & second joints of my index finger, instead of the tip and you don't get the palm rest. After about 6 months on AA alkaline batteries it still operates well at 6' to 7' distances. Farther away than I can really see the screen.
Rating: 
Summary: ABSOLUTELY TERRIBLE!!!!! BUYER BEWARE!!!!!
Review: I purchased this trackball with much anticipation because it had almost all the features I had been looking for in a wireless format. However, when I connected it to my PC and tried to use it, I immediately found that the default orientation is off by about 30 to 45 DEGREES!!! What this means is that if you place the unit next to your keyboard, lay your hand on it, and move the trackball straight UP and DOWN... your cursor will move DIAGONALLY from LOWER LEFT to UPPER RIGHT!!!? I thought I had a defective unit and returned it to my vendor who was quite surprised when I described the strange behavior. He offered to test a replacement unit before he shipped it out to me. Well, he went through four replacement units that ALL behaved the same strange way. He then contacted Logitech and verified that the strange orientation is in fact the product default and that there is an orientation setting in the Logitech Windows MouseWare driver that compensates for this errant behavior. This revelation just left me flabbergasted. I went out to the Logitech website and poked around and found a statement on their product FAQ page that states that all Logitech products will operate normally with the default OS mouse driver. Well, for this product this simply is NOT the case. I then called Logitech tech support to see if there might be a newer version of this product that corrects this problem. The Logitech tech support staff were nice... until I mentioned this particular problem with this particular product. Then they became quite haughty and verbally brash. They first denied there was a problem. Then they acknowledged there was an orientation setting in their Windows driver that corrects the problem. Then they told me this setting would not be present in the upcoming version of the driver?... Their bad attitudes, their denials, and their erroneous information, all contributed to my writing this review. In direct contradiction to their own FAQ statement that all their products will work normally with the default OS mouse drivers, this product simply will not function correctly with DOS, Windows 3.1, Windows NT, OS/2, Mac OS 7-9 or 10, Amiga OS, Linux, etc. (Recently some users have found a way to tweak the linux mouse driver to get things to work, but this is not supported at all by Logitech.) So, essentially, in order to use this product you MUST be running Windows 95/98/2000/XP and you MUST load the Logitech MouseWare driver that contains the orientation setting - at least until they remove this setting from the driver?... As I stated at the beginning of this review, I was so looking forward to this product. The GLARING orientation problem is such a killer for me. The only reason this problem exists, as far as I can guess, is that somewhere in the design phase, the optical sensor was physically moved to a new location on the product and the electronic design engineers neglected to take this into account... I have been quite happy with Logitech products up until now. To the Logitech company, the Logitech design engineers, and the Logitech tech support personnel, I have just a few words: SHAME!!! SHAME on you ALL!!!
Rating:
Summary: I'm left handed
Review: I really like trackballs, they are great at getting rid of excess arm and wrist movements and save time. However, why can't I find one of these puppies made to fit the laft hand? I am currently using a logitech marble mouse trackball that works for either hand, BUT I WANT ONE SPECIFICALLY FOR MY LEFT HAND!! We lefties make up ~15% of the population. Out of 10 million people that's 1.5 million of us out there. Surely that makes enough demand for us to get this product produced. Isn't this some form of discrimination? I can't even special order one and am willing to pay extra for this product. I am so tired of the right hand superiority complex that assumes if it is made for a left hand it isn't worth making. I challenge you righties to try doing everything with your left hand for just one day and you will see what us lefties are faced with for a lifetime. Please try to accomadate us once in a while.
Rating:
Summary: worst tracking ever
Review: I thought this trackball would be awesome, but unfortunately the tracking is the worst I've ever seen. When you spin the ball left and right, the cursor moves up and down. When you spin the ball up and down, the cursor moves left and right. To get the tracking to work, you have to turn the trackball almost horizontal to you, which makes it impossible to use. I'll be returning this immediately.
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