Summary: Yes - you can wear them out, but you can't beat them. I just bought my third Kensington Trackball in 21 years. The second and third were Expert Mouses (Mice?). They were and are precision pointer control devices which put up with abuse and neglect but kept on working.
Summary: I won't deny this trackball is expensive. I need a three button trackball though. With the ability to make the buttons do whatever I want this trackball does the trick. I use it with Blender3D and once I got used to the new positions it works perfect.
Summary: yes i would recommend this trackball mouse. the scroll ring plus 4 buttons makes this trackball to superior than others. nothing beats a trackball for detail work. The wrist rest is definitely helpful BUT the upward slope is a little too high and i believe the ergonomics could be improved.
Summary: This is a great Track ball! I have been using one for years for music production, and this is saving my shoulder form further rapidative shoulder injury. And has a great 'scrolling ring' device as well. Awesome!
Summary: Great item. Loved it so much that I purchased another as a gift. The track ball unit is wonderful because you never have to move it around. It responds beautifully and just makes life so much easier. Do not hesitate to purchase this great item.
Summary: Had one before, and glad I could find another one!. This is the best mouseball ever for people with arthritis or problems with elbow. It comes with a wrist stand that makes it even more friendly. And the price was right!
Summary: been using these in my professional recording and mixing studios for YEARS, never ever disappointed. And Walmart is the CHEAPEST i have found for these ...you wont be let down, LOVE THESE mice ...mouses??