How to get more muscle on torso? P90X vs working out at gym

[Robelus]

My goal is to get more muscle on my deltoids, pecs, back and triceps i.e. to make myself look something between a regular body and a Calvin Klein model.I only have a bit of tummy fat, not a lot.But the thing is, I tried P90X and found the exercises to be a bit crazy when the instructor keeps yelling more sets, and you're already tired out. I tried the abs but cramped fast on P90X. And 90 minutes is a chunk of time out of a regular day.I'm already doing Insanity so 90 more minutes on top of that is a lot.I go to the gym 2-3x a week and generally do circuit, eg. 3 sets of 10 back exercises with machine, 3 sets of assisted bench presses, 3 sets of free weight chest presses, and sometimes I do shoulder presses x1 set of 10, sometimes 1 set of biceps and 1 set of triceps. Generally 1 set is equal to 10 reps. I usually lift weights that are comfortable.But I seem to be lifting the same weight as I always have. And I don't seem to be getting that much bigger. After a workout it might seem I'm a bit bigger, but when I wake up in the morning I don't look that much different anymore. I do drink recovery drink like choco milk after workouts.What's wrong with my workout? It's rare that I can arrange a workout buddy. Thanks