JJ, capped 4 ways, checked flop...turn decision

[Fat Nicky]

Table is really loose. Saw UTG+2 not cap w/AA a few hands earlier, then played it really fast on the flop/turn/river. No other specific reads here.

Party Poker 3/6 Hold'em (10 handed) converter

Preflop: Hero is UTG+1 with J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#CC3333">UTG+2 caps</font>, MP1 calls, <font color="#666666">6 folds</font>, UTG calls, Hero calls.

Flop: (17.33 SB) 8[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
UTG checks, Hero checks, UTG+2 checks, MP1 checks.

Turn: (8.66 BB) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">UTG bets</font>, Hero ????

What would you do, and what's your reasoning?