turn straight, multiway...what to do?

[da burgh]

2/5 game live...just combined tables, CO and Button were both at my previous table, both see me as solid and thinking, havent gotten out of line all night (about 5 hours), other 2 limpers are both monkeys, can have literally ATC p/f, irrelevant in this hand...FWIW I usually dump the flop real fast, but the price was pretty sweet, and i was feelin lucky..

effective stacks ~500

UTG limps, UTG+1 limps, CO limps, Button limps, SB completes
hero is BB with 5 [img]/images/graemlins/club.gif[/img]6 [img]/images/graemlins/diamond.gif[/img]

Flop: $27(after rake)
Q [img]/images/graemlins/heart.gif[/img] 7 [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/spade.gif[/img]
SB check, Hero check, UTG bets $20, UTG+1 calls, CO calls, Button calls, SB folds, Hero calls

Turn: $127
9 [img]/images/graemlins/club.gif[/img]
Hero checks, UTG checks, UTG+1 checks, CO bets $60, Button calls, Hero??