[rory]

Hand #1:
Well played.
Hand #2:
I don't like 3 betting to isolate here-- just fold and
wait for a better spot. Even though UTG may be raising light you only have AJo, and are in EP. The rest of the hand is OK.
Hand #3:
I don't like raising UTG+1 w/ A9s. I usually just fold it or limp. But if I raise here I bet the flop every time. The way you played it, a river bet is good-- a better ace might fold which is a huge coup.