Nobody should be going to exhaustion on each set. It's not only unnecessary, it's counter productive. Focusing on the big 3 for gaining mass is good advice. So

Nobody should be going to exhaustion on each set. It's not only unnecessary, it's counter productive. Focusing on the big 3 for gaining mass is good advice. So is hiring a trainer - just make sure they walk the talk (they look like you want to look, not skinnyfat with a BS certificate)