stuck AA in the middle

[keikiwai]

The table is relatively loose. More than 4 people in each flop generally. But here's the weird part and the P/A part. Every now and then it'll fold to the blinds, and every now and then people will raise and raise w/ 5 people in the pot. In other words more or less of an either really passive all the way around or really aggressive all the way around w/ no rhyme or reason to that I could figure out. No specific reads on players, relatively new to the table, and I just couldn't figure out how these guys were playing.

The reason I played aggressively on the flop was the pf raise and BB fold which had me thinking no one had a part of the flop.

If I were to continue this logic I guess I should have played the rest of the hand aggressively, but I was stuck in the middle and thought re-raise would be spewing chips, but I wasn't willing to lay it down. ???

How would you have played it?

What would you put these card weilding mOOnkeys on?

Party Poker 0.5/1 Hold'em (9 handed) converter

Preflop: Hero is SB with A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img].
UTG calls, UTG+1 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">MP3 raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, BB calls, UTG calls, UTG+1 calls, MP3 calls.

Flop: (15 SB) 5[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets</font>, BB folds, <font color="#CC3333">UTG raises</font>, UTG+1 folds, <font color="#CC3333">MP3 3-bets</font>, <font color="#CC3333">Hero caps</font>, UTG calls, MP3 calls.

Turn: (13.50 BB) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">MP3 raises</font>, Hero calls, <font color="#CC3333">UTG 3-bets</font>, MP3 calls, Hero calls.

River: (22.50 BB) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">MP3 raises</font>, Hero calls, <font color="#CC3333">UTG 3-bets</font>, MP3 calls, Hero calls.

Final Pot: 31.50 BB