If you can deal with tone suckage and use them all then the sky is the limit :-)
I have 8 but got fed up of tap dancing. Its a shame cos I love modulation and delay on the clean channel. But then trying to turn them off when switching to dirt became too much hassle.
Its all about phasers for me, think I will just have them and an OD :)
Well mine are mainly true bypass, plus im sticking in the wobo looper programer ; so i dont have to hopscotch or suffer from tone loss/need buffer etc.
i.e. i can go from clean with chorus and delay to distortion with eq and flange, at the press of one glorious stomp.
I have been down the Multi FX loop (Genex 3) but the sound was terrible and there was always a delay between switching.
Plus a couple of times it would switch on stage when I didn't press nothin!
invariably it always ended up on that one (of many) useless preprogrammed sounds thats supposed to immitate and alien rectal probe + infiniate crescendo volume repeats!