I've always used weight to where i fail at around 5-6 reps. I watched a video with jay cuttler the other day where he says he stick to 10-12 reps year round and never steps out of that range. I've read up on it to. what do you guys think or have had best results from. i am cutting right now trained chest today and worked in the 8-12 range felt pretty good got a nice pump will see if I'm sore tomorrow. but for strictly putting on size/bodybuilding is it best. and does progession on strenth/ reps come along during bulking with the 8-12 range.