Thanks for the great review on the Logitech v450. I just purchased 2 - v450's today for mine and my wifes laptops. So far so good. I've been using Logitech wireless since the beginning and don't care for any of the other brands I've tried. I currently have MX3100 combo which has the MX1000 Laser mouse, the MX700 combo w/optical, MouseMan Optical, a couple of wireless scroll mice w/ball & the original 3 buton wireless mouse w/ball, all of which still work. Of course, now I own 2 v450! Remember if you want the 1 year battery life you must turn off the mouse while not in use! I had to cut the package open, used scissors. I picked up my v450's at Sam's Club for $24 something, can't remember the change. It was $52 something for two with tax.