my personal all time fav is the mickeysoft intellimouse 3.0 i inherited it from a friend who used it 8+ hours every day for 4-5 years, playing wow. then he got new mouse and he gave the intellimouse to me. i had it also for about 4 years, 8+ hours a day. finally it died, dunno how and why, it just stopped working. i did try CPR but nothing helped. it was gone and out of my life. it was a very sad day. i still have it and some times i take it out and looks at it, thinking about all the good times we have had. i cry a little and then i put it back to rest.