NL600, laying down a monster?

[ocklind]

Villain is 27/4/2.5 over 278 hands. Think he would raise w/ AA UTG, or at least limp re-raise. He wants to get it in therefore naturally put him on a monster, dont know what kinda monster though. If this is a fold should I check-raise less on the river to easier fold if he pushes? Personally I like a C/R move here since he might be betting a broken str8-draw/a six. So I induce a bluff and hopefully get more money from a 6.

Possible hands: 66,A6,65,63,33

I beat like 1 hand but would you fold?

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)


Button ($682.10)
SB ($804.10)
<font color="#C00000">Hero ($600)</font>
<font color="#C00000">UTG ($600)</font>
MP ($648.40)
CO ($440)

Preflop: Hero is BB with 5[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $3.
UTG calls $6, <font color="#CC3333">MP raises to $34</font>, <font color="#666666">3 folds</font>, Hero calls $28, UTG calls $28.

Flop: ($105) 6[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, UTG checks, MP checks.

Turn: ($105) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $65</font>, UTG calls $65, MP folds.

River: ($235) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">UTG bets $90</font>, <font color="#CC3333">Hero raises to $300</font>, UTG calls $600 (All-In), Hero ?

What hand do I beat here?