Summary: This is, in my opinion of course, the best mouse there is. I now use a tablet as a mouse only due to wrist issues, but otherwise I'd still be using it. Downside is that I needed to purchase a new one every year or so; I'm a very heavy computer user.
Summary: this does not feel like a Microsoft mouse, the micro-switches are clunky, the wheel feels like its made of two house bricks wielded together and the flex is not that supple, it catches on everything, would not buy this again, I have two original Microsoft Intellimouse/mice!!
Summary: Dont forget to feed this mouse it performed brilliantly for me until I went away for a weekend, I forgot to feed it and found it dead upon my arrival back home. I have now replaced it with the same model and all is well!
Summary: After numerous dissapointments with keyboards and mice about 9 years ago I made the decision to only purchase microsoft. Have never regretted it. Would have preferred a bit more weight behind it, but all in all a very satisfying mouse.