The CST 1400 - It's available for purchase and it's GORGEOUS! I'm thinking about if I'd be able to somehow put my scrollwheel on this... : r/Trackballs
5 Button L-Trac Laser Trackball
Amazon.com: X-keys L-Trac Black Trackball : Electronics
CST2145W (L-TRAC) Trackball w/Scroll Roller - Wired USB