> Your regular ~$50 sucks because it follows the form factor of a mouse even though you don't have to move it around.
I don't understand - between the Kensington Orbit, Kensington TB550, Elecom HUGE, Nulea M505, M511 & M514 and the Micropack V05M - what ergonomic form factors are we missing?
Only the Kensington Orbit is a different form factor. Every single one of the remaining examples follow the mouse form factor, which forces the user to move a hand away from the keyboard to operate a device to the side. Some of your example products even double as a mouse. What exactly don't you understand?
Ah, then I see what you mean. I was thinking of the different form factors in terms of which fingers are moving the ball, how your wrists are oriented, etc.
