I am playing a 20$ 180 people on PS. We are in the third level 25-50. I got decent cards and now have 2500.

I have AJ [img]/images/graemlins/diamond.gif[/img] on the button.

UTG limps (1200 chips)
UTG+1 limps (3000 chips)
MP raises to 200 (1800 chips)
Hero Call (2500 chips)
Blinds Fold
UTG calls,
UTG+1 calls

Pot = 875 (4 way)

Flop : 2 [img]/images/graemlins/spade.gif[/img]3 [img]/images/graemlins/diamond.gif[/img]9 [img]/images/graemlins/diamond.gif[/img]

UTG checks
UTG+1 checks
MP raise to 500
Hero?

Reads : No read on UTG and UTG+1, my instincts tell me that MP has an overpair 80% chance or AK 20% chance. I don't see him raising with a PP that hit a set after two limpers (from early position).

You can also discuss about my pre-flop call, but I called because I was on position and had a decent hands, even if I figured I was behind, it was a good enough drawing hands against decent stack to play it.

What do you do?

There's a lot of possibilities that makes this hand interesting (IMO). If you call and UTG or UTG+1 raise or if everybody calls and you don't hit or if you raise to how much and why do you do that?

Turn and river to come...