call or raise this river?

[mongidig]

20-40 live 9 handed.

Two EP players limp, I raise in MP with AhKh, SB calls, BB folds and the rest call.

The flop: 6h9cAs

Checked to me and I bet, SB calls, and the rest fold. I don't have a great read on SB but he seems to be decent, fairly selective preflop, but maybe a little on the loose side, he does bet into a lot of flops sometimes with as little as bottom pair. I haven't seen him get out of line.

The turn: 6h9cAs9s

Checked to me and I bet, SB calls.

The river: 6h9cAs9s6d

SB bets and I?

[Chipspin]

I would just call. If 87 or two spades missed, or he's got something like 88/77, he isn't paying off your raise anyways.