The first serious discussion I've read on here (lol)
I myself have combined elements from all schools, being a high frequency of bodypart training, intensity and volume
I do a push-pull split 2 on-1 off, 1 compound movement per musclegroup per session, 3 sets to failure of which one for each fiber type (6-10, 3-5 and 10-15 reps)
Reason for this combination: I needed intensity to grow but not too much (so no negative failure etc, too taxing), I still needed SOME volume (this comes out to 9 sets per musclegroup every 8 days as you see) and I needed rest too ofcourse so 2 on 1 off was the way to go