After getting beat to many times with pocket. AA. I leave it up to the table position, and the way other players react to my bets to dictate how i play pocket. AA. Others may disagree with me
(that's fine) 
I want to see the flop without going all in. After the flop then i decide how much to bet. I have also learned to fold after the flop. If a player go's all in after the flop and if i don't improve, It's a no-brainer for me to fold at that point.