400nl Middle set, lots of limpers.

[ahnuld]

Playing 400 nl on Prima, im in for 800 and have a stack of 620. More than ppl involved in hand. I limp UTG with 66 5 others limp, which is very rare for this game.

Flop comes 4 [img]/images/graemlins/club.gif[/img] 6 [img]/images/graemlins/diamond.gif[/img] 8 [img]/images/graemlins/club.gif[/img]

I check, knowing a flush draw will bet, next limper bets 4, 4 calls, I raise to 40. Min bettor now makes in 120. He has 270 behind. What's the best line?