i have own the microsoft wireless ones before and i wouldnt use em again. only had my wireless keyboard and mouse for less then 6months before things started to die. reciever base was right next to my monitor yet i cant pick up a signal. i always had fresh batteries, dl the latest drivers and such, yet it likes to work intermittenly, and some of my friends have the same problem with their microsoft wireless setup.

solution: i went with logitech. best move ever. :thumbup: