Rating: 
Summary: There is no zero stars!
Review: This is the clear example that the most expensive is not always the best. I left a MS optical IntelliMouse for which the wheel scrolled properly with all Development Environments (one of the few that truly does) e.g.: Forte for Java, Visual Basic, Visual C++, IExplorer etc. The problem with this one was that since it had the cable, it started to be imprecise and difficult to handle e.g. made me spend quite some time trying to test visual effects with splitter windows etc. Since I work all day in the computer I found proper to move to a more confortable mouse hopefully a wireless one. I initially bought the Logitech MouseMan Wheel Cordless with very nice design and remarkably is EXTREMELLY accurate but had a nasty problem I had to keep checking/uncheking an option (something like "Wheel scrolling compatible with Office applications") to make the wheel scrolling work whether with Forte for Java OR the rest of the Windows applications since was not possible to have all working. Since it wasn't fair to pay more than 50USD for a mice that didn't completely satisfied my needs I went back to the store willing to pay a few extra bucks more and changed the Logitech by this MS Wireless IntelliMouse Explorer, WHAT A MISTAKE! this is the worst mouse I have ever had!!! and I have used quite a few mouses already (for more than 7 years). I guess the problem is related to the resolution of my laptop (1600x1200) but anyway it is completely inaccurate and is making me crazy. Now I am going to get it back to the store to ask for my original buy the Logitech MouseMan Wheel PS/2 Wireless ;-( I do not recommend it!
Rating:
Summary: Great! When it actualy works.
Review: I bought this because I loved optical mice. But after about 6 months I began to have transmission problems and it kept freezing up for a few seconds at a time. Then minutes, then froze up for good.I should of know that a microsoft product wouldnt last long. Right out of the box I could tell. Very cheap feel to it. Good thing I kept my old mouse.
Im sticking with Logitech. They make much more reliable mice and I never had a problem with them. So avoid this microsoft one and stick with logitech.
Rating: 
Summary: Brilliant on paper, significantly flawed in use
Review: I purchased the Wireless IntelliMouse Explorer several weeks ago, and it is my first foray into the world of cordless mouses. It's a very nice looking and comfortable (for right-handed people, at least) product. It appears to have very effective power saving technology judging by the way the optical sensor acts, although the real test will be how the batteries hold up in the coming months. The red glow of the sensor is mostly concealed and so is not distracting when using it in the dark (unlike some Logitech models). The unit's five buttons and flexible software for configuring them add significantly to the usability of your system - no longer do you need to use awkward key combinations for common operations (e.g. cutting and pasting). However, the cordless technology exhibits some significant, intrinsic flaws. The most obvious is the weight of the unit (mostly due to the batteries). On most surfaces, the weight of the mouse creates a great deal of friction between itself and the surface - it simply doesn't "glide" like other mouses. I've found this very fatiguing. On some surfaces (e.g. 3M Precise Mousing Surface), it has a tendency to 'stick' as well, making it even worse. Compared to my USB mouses (both ball and optical types), the movement of the cursor isn't as smooth - it feels like an old PS/2 mouse in this regard. This is because of the relatively low sample rate when compared to a corded USB mouse. But perhaps the most significant pitfall is the poor response time and resultant lack of precision. This can be illustrated by moving the mouse a tiny bit, and seeing that the cursor on the screen doesn't move at all. Doesn't sound very significant, until you start trying to work with very small movements of sliders (e.g. a volume slider), precisely selecting an area in an image, or simply aiming quickly and accurately in a 3D shooter game. Unfortunately, the weight and precision problems have conspired to make this mouse unsuitable for general use on my PC. Actually, that's stating it unemotionally - not being able to adjust a slider or select an area of the screen with precision, or aim accurately in my favourite fast action games, is extremely frustrating. The higher your screen resolution, the worse this problem will be. Because of these issues, I've gone back to using my corded Logitech Optical Wheel Mouse as my primary mouse (though I still long for the extra buttons of the IntelliMouse Explorer). Thankfully, one of the main reasons I purchased the Wireless IntelliMouse Explorer was to use it as a "remote control" when playing DVDs on my TV using the PC's DVD drive. It serves that purpose well. However, if it weren't for its alternate use, I probably would've returned this mouse.
Rating: 
Summary: World's Best Mouse
Review: This item is listed as a c|net editor's choice. The reviewer called it, "The world's best mouse" so I had to buy one! He was right! I love the smooth cursor movement, precise accuracy and 5 buttons. The software allows you to customize the buttons for use within individual programs - very cool! And if that weren't enough, it feels GREAT in your hand.
Rating:
Summary: Buy This Mouse If You Own Stock In A Battery Company
Review: Great ergonomics, great functionality, fits my hand like a glove. BUT...I have had it for 5 weeks and just replaced my 3rd set of batteries. I DO NOT leave my computer on all of the time. It is shut down when not being used. This is a serious DESIGN FLAW and MS should know better. The person in the office next to mine uses a Logitech Cordless (I got the MS one because it fit my hand better...it is a little bigger) and he still hasn't had to change his batteries after almost six months. I WOULD NOT BUY this product again. Learn from the experience of others and do the same.
Rating:
Summary: Wireless mouse by Microsoft
Review: Uses a set of igh end batteries in 2 days. Other than that it works fine.... Unfortunatley I dont want to spend money on batteries all the time. JS
Rating:
Summary: Stick to Software
Review: This mouse has a nice feel to it, for about 5 minutes then you'll most likely notice a tiny pain in your pinky finger. This may not be the case for everyone but my hands are a little larger than most and when using this mouse it tends to drag my pinky around after it. I have both this mouse and the Cordless Mouseman Optical by Logitech, and I would say by far the Logitech mouse is better buy. It may have one less button but also has a smaller price tag. Please save your money and don't make the same mistake that I did.
Rating:
Summary: Not for me
Review: I love the shape of the mouse and the fact that it's wireless. BUT! the moment I started to use it, I noticed the sluggishness with this mouse. Too bad, I was going to fall in love with this mouse, but I can't stand the sluggishness as I do heavy work with computers. I do programming, so I need real quick response like wired Intelli Mouse Explorer. I'm going to back to it right now...
Rating:
Summary: not worth it !!!
Review: don't be fooled by it's cool looking, it's not worth the money. this product is definitely not for someone like me who are used to fast and accurate cursor moving speed, you will lose your patient and eventually MURDER the mouse. i knew i bought the wrong product after i used it for only about 10 minutes.
Rating:
Summary: Stiff and jerky
Review: i was dead exited to get this in the post this morning but an afternoon's use has left me very disappointed. After some research on the web it seems i'm not alone in having problems with using it, and i've yet to find a solution. The problem is that it's very very jerky, no smoothness to speak of at all, and i know it's not a software problem as i've upgraded from the same optical mouse (only not the wireless version) and my old mouse is noticeably better at coping with fast mouse movement than this one. On the plus side it's wireless, which is great, has the extra progammable buttons and looks vee cool on my desktop. Also, another irritation is the extra weight of the batteries, which tend to exaggerate the jerky nature when moving around slowly. (When will someone bring out a great mouse that glides effortlessly...?) i'm going to try it for a few days and see if i can get used to it, as i would really like to like this mouse, but even so, it will never live up to the blurb about how smashing and wonderful it is that you hear from Micro$oft.
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