The advantage
of knobs (that actually work in a rotary fashion) is that you
get built in fine tuning, by dragging the mouse further away from the centre
of the dial.
the problem i find though with knobs is that a mouse just isnt a
fine-tuned enough tool to drag a knob around - this might just be the
apps i'm using currently though, and the way they've coded their
knobs... if i use my graphics stylus, things improve, but i've only got
one usb port and cant run it concurrently with my usb-quattro...
one option would be a knob control that uses the wheel in a wheel mouse
for moving the knobs. you put the mouse pointer on a knob and then use
the wheel... with a fine-tuned precision, i think that'd be much better
than other types of knobs i've seen based on mous movement.
C A R L E S