i'm a trackball guy. have been for 11+ years. for the last 5 years i've been using an MS Trackball Explorer. as far as i'm concerned, it's the best pointing device ever. even better than fingers. its near perfect, the only thing it was missing is that new tilt scroll-wheel crap. own a couple Trackball Explorers, and this one might actually be the original, making it somewhere between 2.5 to 5 years old. but it just died in my hand. was clicking around, minding my own business, and the cursor stopped. then i heard that sound signifying a USB device was just removed, and a popup saying that a device/resource has failed. looked down and the trackball was not glowing that satisfying evil red glow. desperately tried other USB ports on the same machine ... but no response. went to another computer ... no glow ... and the device could not be recognized. then i cried ...
even worse, MS has stopped making trackballs. pretty sure i've got at least one in storage. hell, i might have to buy all i can find on ebay ... at least enough to last for the rest of my life. should probably keep this one for spare parts. looks like logitech might have a possible replacement too ... just with too many badly placed buttons ... and no evil glow.
trackballs really are the best. you dont have to move them and the ergonomics are great. the horizontal mouse position hurts my elbow. not to mention i had a custom button mapping for right clicking with the pinky. on a mouse your pinky is useless. they also provide additional security because nobody else knows how to use them. then you get to laugh at these people because they cant even point and click. double clicking ... forget it. and if there is trouble then you can remove the ball and use it as a projectile weapon. if you threw a mouse ball at somebody, laughable; but this things got some weight to it.