Elecom Deft Trackball
The Elecom Deft is a wireless trackball made by Elecom. It's the trackball I currently use as the mouse for my main PC. For nerds, the model number of mine is M-DT2DR. I bought it second-hand from eBay for £30.[image: The Trackball]
UPDATE: after using it for 3 months, one of the butons has already started to fail. It's one of the top macro buttons that I remapped to be a middle click for use in plan 9, and it's started to be inconsistent.
It's pretty good. The ball is relatively small and it took some time to be at all precise with it. The thumb cluster of buttons and scroll-wheel is nice but the right-click is annoyingly small. I ended up remapping one of the macro buttons to a second middle-click to use it in plan 9. Having a scroll wheel is a nice upgrade over my previous trackball, the Logitech Trackman Marble, but the scroll click is a bit stiff to press. The scrollwheel also tilts up and down but I've yet to find a use for this function at all.
The ball is smoother too and it overall feels quite nice and comfortable to use, with the exception of the stupid right click.