Rating: 
Summary: Excellent mouse
Review: I can't add much to what has already been said...mouse moves smoothly and has a soft rubbery grip, fits in the palm of my hand perfectly...left handed users may have a big problem with this mouse. Only problem that I have is the scrollwheel tends to have some lag on it...I have no idea how that is possible, but when I scroll, there is a usual delay, but its easy to overlook in an overall great mouse.
Rating:
Summary: Precisely, my Dear.
Review: I consider the mouse to be one of the three key components of a computer system which will greatly affect your enjoyment and productivity (keyboard and monitor, are the other two) so quality is important. As a result, I have been hooked on Microsoft mice since 1991. When optical mice came out, I switched over to a MS Explorer and thought I had found the perfect mouse...until I bought the IBM Optical Navigator. It surpasses the MS Explorer by a wide margin.The ergonomics are superb. This mouse fits so comfortably in your hand, better than MS. And, the buttons have that "just right" amount of resistance/click, travel and user feedback which MS mice have always had. But the best feature about this mouse is its precision and accuracy of movement. I immediately noticed it and so did my wife. The pointer becomes an extension of your hand. I don't know how to describe it any other way...but it is distinctly superior to my MS optical mice (we have two other computers equiped with MS optical mice, also). This mouse is a sleeper and IBM should market it more effectively. It is that good. Oh yes, even though the glowing blue scroll wheel does nothing to improve performance...it is a strangely sublime experience that is reason enough to own this mouse. I don't know why, but it is. Trust me.
Rating: 
Summary: Great, but
Review: I generally agree with the other positive reviews here. My only complaint is that the setup software that comes with the mouse doesn't allow for mouse acceleration as well as mouse speed. My previous mouse allowed for both. Without acceleration, I have to move the mouse a lot more to get the cursor across the screen... which is not the biggest problem in the world but is on the other hand a problem that could have been avoided by adding the acceleration feature to the software.
Rating: 
Summary: IBM beats out Microsoft & Logitech - Well, just Logitech now
Review: I had an old mechanical Logitech Mouseman Plus that I wanted to replace with an optical mouse. I first got a Microsoft Intellimouse Explorer which worked fine for about 3 or 4 months, then it started turning on & off when I was trying to use it. I tried the mouse on multiple computers and had the same results, so I knew the mouse was history. Because I bought an OEM model, though, Microsoft doesn't support it like they do the ones you buy retail (for more money). I bought this IBM as the next replacement & am I ever happy the Microsoft died! This mouse has worked flawlessly for me and even looks cool. The software package is excellent, too, because it allows you to compensate for off-angle motion. The most comfortable position for me to hold the mouse in my hand is at a slight angle. Because of this, when I move the mouse up & down, the mouse isn't pointing straight up & down at the time. With other mice, I just had to get used to moving the mouse at slight angles to get it to move straight, but the IBM software lets me tell it what direction I want as up & down. I've also tried many other mice & the IBM is the best I've used, both in comfort (the size is just right), performance, and looks. It's also not as expensive as the Microsoft was, so what more could I ask for? UPDATE: The first generation of Microsoft Intellimouse Explorers had a known defect so Microsoft replaced mine free (they even paid the shipping). I don't know why they wouldn't support it initially, but now that I have my replacement, I use it full-time and the IBM mouse has been placed on the "other" computer. The new Microsoft software is also excellent and the slight changes in the mouse itself are enough for me to recommend that mouse over the IBM.
Rating: 
Summary: Looks good but useless for me.
Review: I had big expectations on this purchase but turned out to be big disappointment. I am using KVM switch and manage two computers. When I connected it to my switch it was detected fine but once the software was installed I lost the curser. Updated driver set did helped neither. I never used the software but I assume without it you can't program the bottons therefore device turns out to be a useless 4 botton mouse. I had explorer mouse, this is piece of j...k compare with optical explorer.
Rating:
Summary: Ok for a few months
Review: I had this mouse twice, and I noticed after 3-4 months of use the scroll seems to not function anymore. Besides that, it is a ok mouse.
Rating:
Summary: Better Than Microsoft
Review: I have been using this mouse for a month now and it has passed every test. The best part is the ergonomics, I spend several hours a day on a computer so this is a key point for me. The size, shape and texture are all excellent and side button placement is out of the way so you will not accidently hit it but still within easy reach.
At work I use a Microsoft Internet Explorer optical mouse, which is very good, but the nod goes to the IBM hands down in every catagory. Ergonomics, performance and appearance.
And I have to be honest, the blue lit scroll wheel is totally cool and makes the mouse look impressive to others. The wheel itself still has that same rubbery feel, so nothing was sacrificed to make it illuminate, which was one of my concerns because I purchased this mouse from pictures and reviews.
Installation of the mouse and it's software was as easy as it gets. I tried it on both the USB and PS2 and could not see any performance differance.
The one and only down side is for gamers, like me, when you move the mouse excessively fast from side to side the pointer just sits there. I can not fault the mouse for this because I hooked up a Microsoft Optical and it did the exact same thing. This seems to be a quirk with all optical mice, not just this one. You can adjust the ballistics to minimize the effect, and then just get used to moving your wrist a little slower and it plays just fine for most games.
Rating:
Summary: This mouse rocks!
Review: I have had this mouse (starting with model m027f0, which looks and feels exactly the same as thisone) for about 2 years now. Inow own one for home and work, and have converted several co workers to it, just because they sat at my desk and got hooked. Never had a problem with jerky motion, software locks, or any of the other negatives previously mentioned, just a very comfortable, reliable mouse that fits my hand perfectly! Someone mentioned the back button not working in Windows explorer? I have not had that problem - in fact, there hasnt been a place where the back action failed to work. The only problem Ive found is sitting at a desk without this mouse, I constantly go for the side (back) button - its habit forming!
Rating:
Summary: Beware of crashing mice
Review: I have had this mouse for about four months and have had nothing but trouble with it. It freezes upon start-up of windows from time to time and the driver installation disk has never installed the drivers correctly without freezing up my entire system. This is not an isolated incident as I have attempted to install this mouse on both my last computer, a Hewlett Packard Pavilion running Windows 98 (CRASH!) and most recently on my brand new SONY Vaio running Windows XP Professional (CRASH AGAIN!). Terrible mouse, and an utterly ininstallable driver disk....Try a microsoft optical mouse instead, at least the windows operating system will agree with it.
Rating:
Summary: Best of the opticals
Review: I have now owned this mouse for 6 months and am very happy with it. The Microsoft mouse feels like a cheap toy next to this finely crafted and contoured mouse. The ergonomics are perfect, it fits perfectly in my hand! It is very precise AND I use it for first person shooter games as well as graphic design. No complaints, get one now. Plus the blue glowing scroll wheel is about as cool as a mouse can get.
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