Pros: Great design...love the verticle "hand shake" grip. More buttons than I know what to do with. Ability to change pointer speed on the mouse with a button right there on the side of the mouse is genious.

Cons: Not really a con but, would love to see a wireless model of version 4 someday.

Overall Review: Have been using an Evoluent mouse for a several years now(version 3 & 4). It has saved my arm from what was nagging pain after a days work. I was never diagnosed with carpal tunnel but, my wife was and what she described, I could definetly say I was experiencing a mild form of it or the beginning stages. But, from day one of using the Evoluent mouse I've experience no pain....none....nada....zip!! Thanks Evoluent!!!

Pros: Just installed this unit on MSI P67A-GD53 / i5-2500K tonight (no clearance issues)...been running about 4 hours and, at stock clock, seeing -15c to -20c compared to Intel fan....at 4.2 OC, seeing -10c to -15c compared to Intel fan. It's so quiet that I'm actually able to hear the 120mm fan in my PSU. Great product Zalman

Cons: Was scheduled to be delivered on Monday, 7/18, but arrived a day late.

Overall Review: Installation is super easy (just look at the pictures in the instruction manual)...took about 15 minutes to install after getting the mobo out of my case (that included removing the old fan, cleaning, installing, and ready to put back in the case). I used Antec Formula 7 thermal compound...don't know if the supplied compound is better or not?!

Pros: Been using this mouse for almost a year now....no more wrist, fore arm, or elbow pain at the end of the day!! NONE!! I use the pointer and middle finger buttons as I would on any mouse (left click & right click). The third button I have programmed for paging forward while browsing the Internet (it doesn't get used often) and the thumb button is great for paging back while browsing the Internet. The wheel, of course, is handy for scrolling pages. The programmable DPI is very cool and comes in handy when working with pictures and drawings. But the best thing about this mouse is the relief it provides to your wrist and arm!! I'm recommending it to all my friends and family who have been struggling with carpal tunnel syndrome.

Cons: The wheel is slow to respond occasionally.

Overall Review: It takes a little time to get used to the grip or "handshake" of this mouse but once you get comfortable with it it's just as easy as any other mouse. Wireless would be a great next step in the "evoluent" of this mouse.