I've tried more and less volumn. I think it depends by person, and obviously if your using AS you can take more punishment. Lee Priest says he does 30 sets just for bis.
HIT-type workouts did not work for me. I do more vol. and lift heavy so I have to take greater rests between sets. If I do not rest like 3 minutes between sets,I don't feel like I recover enought to tackle another heavy set. I lift so about 1.5-2 hours 6x/week.