Pros: The most comfortable mouse I have ever used. I loved it so much at home, that I bought one for work. I previously had a couple of Logitech MX518's that I liked but I much prefer this. I currently use it on my home DELL laptop, home Macbook Pro and workstation at work. A coworker liked it so much, he also ordered one for work and then likewise another for his home use.

Cons: My wife does not like it if she ever sits at my computer. Something about it being too big for her hand. That maybe a factor for some with smaller hands? Software for me was sometimes "glitchy" in that it would sometimes hang or crash when I used it to change the LED color of the mouse. I found a color I settled on though so I've not touched that software since.

Pros: Plugged it in, installed the software (currently running Vista) and it just worked. I wanted a 3rd display option to run at 1680x1050 and had previously been using MaxiVista software to do just that but grew tired of slow refresh's accross the network and hard to read text. This hardware solution works and I'll be picking up another one for a similar 3 monitor setup at home. For a small price, I no longer have to guess whether something is an "I" or and "L" or a 1 if it's code I'm looking at. Is fine for browser based video (youtube etc.) I have not tried to play any games on it but this is for a work setup and I love it.

Cons: I'm now out of open USB ports but I'll remedy that if I require another USB port down the line...

Overall Review: If I had the desk space I'd really like to try a second one and a 4th monitor :)