My old mouseThis mouse has been out for a while, but since I bought one for myself last week, might as well give it a review.

The mouse I had before was a part of Logitech's Cordless Desktop S520 set. The mouse served me well, but I would have to say that when I started using the keyboard/mouse set, I noticed lag. I wouldn't say it was very significant lag, I've gotten used to it now. It could be a good or bad thing. 

SunBubbles says (5:11 PM):

 is there a quick way to switch between wireless and corded mice?