as you say, the answer to this question is what style are you playing?
for worship stuff, i need to cover a lot of sounds, so my board is quite expansive.(approx. 10 plus tuner)
for Rock - drive into fuzz (with DI/pre according to venue)
for funkier things - qtron, wah, a drive, and comp (occaisionally a flanger too - but that would make five!)
for jazz - chorus / flange, comp.