Why not use the best of both worlds. I always start off with a heavy set for like 4/5/6 reps then i do one more set of 13 reps. im talking about 2 working sets per exerize here. i believe in mentzer's hit-training. even when im low on cals dieting, im still getting stronger this way, otherwise it gets boring. i just worked up to 100 kg for incline presses, for 3 reps, nothing fancy about that, but for me its a accomplishment, never see guys use that amount of weight with my low bodyweight of 83 kg, you could say im pound for pound one of the strongest in the gym. guys should focus on strength even when dieting imo, you aint gonna get any new muscle so why bother going to failure, instead of that get stronger!