The difference between Large and Small for music is pretty subtle, and I can't hear a difference at all for most movies. The difference isn't really in the deep bass, I *think* it's more around the crossover frequency but not sure.

I haven't even found the right words to describe the different sound, guess I need to read more high end audio mags (or wine tasting reports ).

M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8