I like big knobs, but I’m not a fan of the style of the biggest knob, and it covers too much of the graphics, and it gets a little too close to the other knobs. The big knob is nowhere near big enough. I vote bigger.
I like the style of the second knob, looks more like its selecting a wibble, plus its got that classy vibe. The biggest covers too much graphic imo and the small one looks too small/distant.
For me… Big for performance / live play with clear space around and small to tiny (trim pot hole) if you’d best lay off during a set. Still want a ships wheel for a filter control or a huge railway points lever to reverse direction on a sequencer. Too big?