Best Trackballs 2016
This page is a list of best trackballs, from user's reviews around the web, updated for 2016.
I put them in 2 categories: Big Balls, and Small Balls.
Kensington Slimblade Trackball
Best design. 4 buttons. Huge ball. But there are complaints about the software.
No scroll wheel, but it's got a mechanism that when twisting the ball (like earth) is scrolling. Still, not a good as a dedicated scroll wheel.
for video, see: Slimblade Trackball
L-Trac Laser Trackball
Highest quality. Biggest in size. Huge ball. Laser tracking, no need to clean. 3 standard buttons, plus a scroll wheel! And, no need for any software to work.
Minor complaints is that the scroll-wheel and middle button are hard to reach, and isn't as ergonomic.
The Itac trackballs are professional, and the ball got the least friction of all. But, is very expensive, and hard to buy.
see also Trackballs That Can Spin
Kensington Expert Mouse
Classic. Huge ball. 4 buttons. Best thing is scroll-ring. This is large, and tall. Ball got big friction.
more photos at Kensington Expert Mouse
Elecom DEFT M-DT2 Trackball
this one is considered the best by some.
it's got the most smooth ball, and not expensive.
No extra software required. Works out of the box for standard buttons and scroll wheel.
Has DPI switch.
the only issue, is that the whole thing is a bit small. If you got big hands, this is not for you.
full review: Elecom DEFT M-DT2 Trackball
Kensington Orbit Trackball with Scroll Ring
this one is well-loved. Medium sized ball, only 2 buttons, medium priced, but best thing is the scroll ring.
detail and video at Kensington Orbit Trackball with Scroll Ring
Logitech M570 Wireless Trackball
Logitech's M570 trackball is the most popular, simply because of the name, and low price. Whether you like it depends on whether you like thumb operated trackball.
See video reviews at Logitech M570 Wireless Trackball