a set, a possible straght, a small pot and lots of action

[vector]

Party Poker No-Limit Hold'em, $1 BB (6 max, 6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

MP ($211.9)
Hero ($180.8)
Button ($64)
SB ($81.57)
BB ($107.2)
UTG ($138.03)

Preflop: Hero is CO with 2/images/graemlins/diamond.gif, 2/images/graemlins/heart.gif. SB posts a blind of $0.5.
UTG calls $1, <font color="#666666">1 fold</font>, Hero calls $1, <font color="#666666">1 fold</font>, SB (poster) completes, BB checks.

Flop: ($4) A/images/graemlins/diamond.gif, 3/images/graemlins/diamond.gif, 2/images/graemlins/spade.gif <font color="#0000FF">(4 players)</font>
SB checks, BB checks, UTG checks, <font color="#CC3333">Hero bets $3</font>, <font color="#CC3333">SB raises to $6</font>, <font color="#CC3333">BB raises to $20</font>, UTG folds, Hero?

BB is 33/7 from a tiny hand sample, SB is 38/4 from an only slightly larger one. My image is tight, if they are paying attention.

Kind of weird situation, I wasn't sure what to do. I considered pushing, calling and folding, and I still can't see which of those is clearly best, hence this post.

Ideas how to play this one?

Thanks.

[-Skeme-]

I honestly have no idea. This could be a good thread. I anticipate the replies.

[xorbie]

This is really, really, tough to play unless I've seen how often these guys check/raise. I mean... it's hard to see them both have AK here, and the other hands are higher set, A3 or 45. It's not looking pretty for you, unless you know this is the type of donk to checkraise with A9o here.