UPDATE:
Well after doing some more web mining.
I think I know why the older TrackBalls are in such high demand now.
Seems that the Gamers are hacking them for their gaming systems.
Either modding game pads and adding a Trackball to it.
Or simply modding the TrackBall too hookup to their game system.
Even seeing Trackballs being used in MAME's
(M)ultiple (A)rcade (M)achine (E)mulator.
Well,
Still no luck with the Kensington.
After Looking at several Trackballs.
Found this one.
QTronix Libra 90 Trackball, Black - Wired USB or PS/2
It lists for $30.
But I need too find the Spec's on it first.
If it meet's my requirements then I might just get it.
{Though it seems more like a down grade.}
Signed: Ensign Tzap