Rating: 
Summary: FINALLY
Review: finally i found a trackwheel i love since my last one got doused with mt. dew thanks to my niece. best thing they ever invented dont hesitate buy it!!!
Rating: 
Summary: pretty darn good
Review: First, what's this trackball doing under the mice category?This trackball is so comfortable it's like it becomes part of my hand. The thumb control has taken some getting used to since I just switched from a finger controlled one, but I'm getting along fine. My opinion is finger ones are a little easier to control, but thumb ones tend to be more comfortable in the hand. And I love not having the extra cord on my desk. If anyone has gotten annoyed at the pointer not tracking well during sudden movements, just download the most recent driver from the logitech website. The enclosed version can't handle sudden movements when the acceleration feature is used, causing the pointer to stutter. This is why it gets 4 stars instead of 5. But it's an easy fix and now I love it even more.
Rating: 
Summary: cordless trouble
Review: For some this may be an ok product, but I have three problems with it:
1. My keyboard and trackball are on a metal keyboard tray. Because of this, the wireless signal does not work reliably if the trackball is more than 4 inches or so from the receiver.
2. Sometimes, maybe once or twice a week, the trackball just goes crazy and starts scrolling and clicking all over. This can be ... dangerous. I don't know if this is related to (1) or not.
3. There is a lack of precision in movement of the ball for fine motion, and the ball doesn't always move smoothly but sticks sometimes. Previous trackballs I have owned have not had this problem.
The size and shape are nice, but these problems make it a real pain. If I were to buy this again, I would definitely buy the corded version. Cordless operation just isn't worth the hassles when it doesn't work right.
Rating:
Summary: I love this trackball
Review: Four years ago I changed from the standard mouse to the wired version of this trackball. Yes, it took 2 days or so to get used to it, but then it became second nature. I love not having to pick up the mouse to get the cord out of the way, or running out of room or off of the mouse pad. With this wireless trackball and my wireless keyboard, I set my laptop on my coffee table and kick back on my couch doing all of my work and internet surfing. I've never had any problems with this model, in fact, I own three at home and one at work. The three at home, one for my laptop, my wife's laptop, and my kids' computer. I hope they never discontinue this style, for it is the most comfortale to use. If you're still using a regular mouse, it's time to try out a trackball. Again, it takes a day or two to get used to, but you will not be sorry. I just can't wait for a bluetooth version of this trackball so that I don't have to plug the receiver into a USB port.
Rating:
Summary: Logitech did it again
Review: Great trackball..... And contrary to a previous review Logitech has Mac drivers. They support OS 8.6-9.2.2 and OS X.
Rating:
Summary: Good design, but sluggish response
Review: I am a fan of the design of the Trackman Wheel, but the cordless version is quite a bit less responsive than the corded version -- the cursor does not track the motion of the trackball as precisely with the cordless version when compared to the corded. Were I running it through the PS/2 interface, I would be checking whether the refresh rate had been set too low. The sluggishness has that kind of feel. If you like the design -- I do -- stick with the corded version if precision of response is important to you. A gamer would notice the difference immediately. Others may not be as easily annoyed.
Rating:
Summary: Great Trackball! (but needs more range)
Review: I am a trackball fan from way back since I was first introduced to them by my physical therapist after having a shoulder operation that made moving my arm next to impossible. I find moving a mouse around a desk both clumsy and unnatural and just don't understand how people can accept them. This is my third trackball from Logitech and it is by far the best one I have had.(I gave the old ones to friends or family who are now converts to the trackball way!) It took a little while to get used to having the ball on the left side as opposed to the standard center position, but once I got used to using my thumb, things really flew. Set up was snap and the documentation was great. The design is very comfortable and the buttons and scroll wheel fall easily to hand. It has operated flawlessly for the year+ that I have owned it and I have only had to change the battery once in that time. The cordless feature works great and is a real boon to me because of my cluttered desk. Its RF signal does not interfere with my other IR controlled equipment(i.e. stereo and cordless keyboard). My only quibbles with this trackball (and the reason I gave it 4 stars instead of 5) is that it needs a greater range and they need to use ball bearings in the ball seat like their other trackballs. Right now I have to have the reciever within a foot or so of the trackball to work consistantly and it would be much more convenient if I could stick it someplace out of the way. Using ball bearings instead of the current nylon mounts in the ball seat would give the ball the super smooth action that their other trackballs have had and that I'm used to. In the end, I would certainly recommend this to anyone looking to make their computing a more pleasurable experience, but be warned...trackballs can be addictive!
Rating: 
Summary: No Mac support
Review: I bought this because of the design. However the Mouseware software does not work on a Mac. It conflicts with Apple's software and Logitech has not updated it or fixed the problems. Unfortunately all manufacturers of mice provide poor support for Mac, so if you want to use this item, you will have to pay an additional $20 for the shareware program "USB Mouse Overdrive" to get it to work.
Rating:
Summary: Great Mouse
Review: i got this mouse a few days ago, and i have but one things to say about it- ITS AWESOME! although the setup intructions are slightly incorrect, once you get past that point, this mose moves faster and when you get a cordless, this one can work up to 5 or 6 feet away from its reciever. and about the reciever, be very careful about buying this mouse if you dont have a space about 1 foot away from all other electronics; if the reciever is too close to electronics, it tends to disconnect and not get many movements from the mouse. and while many people say that trackball mice are not good for precision, id have to object. i was able to use the "paint" application just fine with this mouse and i would have to say that even though its shape is very different than that of the traditional mouse, it only takes a short while to adjust to its shape. my dad has only used it once or twice, and even he has become adjusted to it.i would hav to say that this is well worth every penny and i would highly reccommend it to anyone who has limited space, a little spare time, or just wants something unique. $40, i think, is an awesome price for such a capable mouse. if you hav a desk that has the pull-out keyboard drawer like I do, than i would really recommend that you buy a cordless mouse. and once again, be very careful of how much distance you can put between the reciever and other electronics- have fun!
Rating:
Summary: Great
Review: I got this mouse as a birthday present and I LOVE it!! The trackball is quick and responsive, and the shape is comfortable in your hand. I highly recommend this.
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