a flop spot

[Hobbs.]

utg is a 26/18/2.3 over 1300 hands and appears to play well. Other guy is 31/11 over 100 hands or so and I don't have any specific reads on him.

I also probably have a LAGish image, but who knows if either are really paying attention.

Full Tilt Poker $3/$6 Limit Hold'em - 5 players
Hand Converter Tool from DeucesCracked.com

Preflop: Hero is BB with 5[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/diamond.gif[/img]
<font color="#FF0000">UTG raises</font>, CO folds, Button calls, Hero calls.

Flop: (6.00 SB) 3[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#FF0000">UTG bets</font>, <font color="#FF0000">Button raises</font>, hero?

we 3-betting or folding here?