clearly superior technologies CST1550 - PCTrac Black USB and PS2 (1year warranty)

I have been using computers since I was 10 years old. 31 years later my mouse hand gave up.I looked at the trackballs on the market and Kensington model looked pretty cheap and nasty even if it did have lots of buttons (I only really need left, right and the scroller). I scoured reviews up and down YouTube so I took a really deep approach before purchasing this product. What I really like is the traction that is on the roller.Very happy with this product and if you're on the fence the build on this trackball is reallly good as well.

This trackball has excellent performance. Extremely smooth scrolling, and the dynamic effect works very well. This affect means that when you move the ball slowly it moves the cursor in small increments, allowing for precise movement, but as you move the ball faster, the cursor moves in large increments allowing you to jump across the screen quickly -- no need to switch DPI based on tasks like with some other devices. The only downside was for me it was not very comfortable. My wrist was always in a awkward position. I even tried propping it up which helped a little bit, but it was still too uncomfortable so I returned it.

Trackballs should be available in two sizes - Womens & Mens.The width is fine, but the length is too long.Otherwise, it works great, I do not have any hand pain.

I've used these trackballs for several years now and really like them. I've tried a few others, but prefer these.

It is what was advertised, but I don't like it.