Turn Line?

[Catt]

Bet the turn. You very well may be three-betting, too, depending on what happens. I find it hard to believe that CO checks a set on this turn and I think you're almost certainly ahead of him; if your read on SB is accurate he's playing his hand awfully douche-ishly and I'd welcome his C/R. I'd be more worried that CO has the flush or a turned straight with 99 if he C/R's you both after you bet. But even if that happens you've got a big redraw the nut flush (barring some random straight flush if the flush comes via 6, 9, J of flush).

Defintiely bet the river if a rag falls.