TrackBalls -
Microsoft Intelli-Trackball looks different and is a bit chunky. The placement of
both buttons near the thumb is a bit awkward. Yet, it has a strange comfort to it.
The ball is smooth and easy to move, the wheel could use some work. The movement
of the wheel is rough and delicate. Some sort of track senses movement.
MarbleMan FX looks like something from the future. The design places everything at
your fingertips. The large ball seems out of place, but ensures precise control.
Both MarbleMan and Microsoft versions are finger controlled, which i find less
stressing to the hand over long periods of use. Unlike the Microsoft, the
MarbleMan includes many programmable buttons.
Microsoft Intelli-Trackball (MSRP - $79.99 us) - 7/10
MarbleMan FX (MSRP - $99.99 us) - 8/10
The programmable buttons puts it over the Microsoft version.
MarbleMan Plus (MSRP - $79.99 us) - 7/10
Most places selling the Regular MarbleMan for $25.00