Knobs are still the best option I've come up with, they act like sliders with the mouse, yet they are smaller so you can have more density. You can also draw a

Knobs are still the best option I've come up with, they act like sliders with the mouse, yet they are smaller so you can have more density. You can also draw a longer track for a given control size, 2pir > 2*r. They often get assigned to a knob on a midi controller anyway, so it makes sense. My knobs look like software, I refuse to do screw heads, metal finishes, etc. I haven't done much touch screen software, so no comments there.