Pros Good ergonomics
Cons Almost useless for working with graphic applications
Summary I bought the mouse because I needed something bigger for my hand and let the salesman's assurances that the wireless worked well overrule my common sense. Immediately had problems with the 3 foot limit. Worst of all is the middle mouse button doesn't work consistently, and apparently this is a known problem with all the Microsoft wireless mice. Some users will never use a middle mouse button but most of my graphic and 3D applications require it. Bottom line is this mouse is useless to me.
Pros Keeps paper from blowing away.
Cons Routinely not responsive to motion or mouse clicks even while signal strength is reported as "max" (despite a receiver antenna that's as big as the mouse). Double clicks and scrolling appear to be particularly problematic.
Summary Fail. A miserable, unreliable product. Few things could have a worse effect on my computing experience than a mouse that works only some of the time.
Pros Very compfortable for a lefty to use
Cons Side button placement is a little off
Summary I have been a long time user of the logitech MX1000. Excellent mouse, but very awkward for a left handed user. My dream is they would make a left handed version, but they don't seem to think lefties are a market force!(surprising since many techies are lefties)
The WLM5000 is quite comfortable for me to use, and very precise and responsive. Excellent to use with Photoshop. Love the scroll wheel, and programable buttons for getting around the internet. I highly recommend this unit, but would buy a left handed MX1000 in a heartbeat.
Pros Mouse is pretty robust with its nice design, it has a smooth scroll technology and is quite precise. Unlike its often-accompanying keyboard it does not disconnect too often and if you keep the receiver close it will not "go wild".
Cons Unfortunately there are much more cons than pros - first of all, it is near useless on Windows Vista/7. You'd think a Microsoft mouse would be supported on Microsoft software but you'd be terribly wrong. There is a well known problem with its scrolling wh
Summary I've tested a lot of wireless mice and while this one has the best middle-approach or neutral yet ergonomic design its useful only on older Windows systems. Its worth noting that I used this product both at home and work (two separate units). Few advises: Test the product in the shop if possible - many Microsoft wireless units have major issues and simply won't work out of the box, don't buy those. Don't buy there keyboards, ever (they often come with the mouse). Overall, Microsoft hardware is quite unreliable but I've had many bad experiences with Logitech as well - you just can't win.
Pros Long battery life. Never had range issues
Cons Durability: The left click button is starting to not register clicks. And as a gamer that is becoming very anoying.