[Manzanita]

Bomblade,

I'll dissent from the others as I think that smooth-calling the flop is the best play. This doesn't look too suspicious given the bloated pot and your position.

The main reason for just calling is that your 3-bet on the flop is unlikely to knock out any hands that you want out. The SB raised preflop and then bet into 5 players so he must have some kind of hand. The other 3 opponents are already in for 2 bets and will almost surely call one more.

With a flush draw on the flop and 4 players already in the pot it is likely that at least one opponent is drawing. You may have to fold on the turn if a heart comes and there is much action in front of you (although you don't specify I'm assuming that you don't have a heart), which will make you glad that you saved that flop bet. Wait until the turn and force opponents on a flush draw to pay dearly to continue.

Finally, you have position on the field and are in perfect position to get in a raise on the turn if you choose to do so.

-- Manzanita