You think 99 is gonna raise on the turn with that board?
I like betting almost all flops for the hands I'm playing in 6 max limit. Bet when I hit, bet when I miss, bet when I've flopped the nuts.... It makes it very difficult to put me on a hand. If the flop was a raibow, I might check, but with 2 suited cards on the flop, go ahead and bet.
Last thing: When you raise preflop and then check, it looks suspicious. Aspecially after an all high card flop. You're not gonna get any action from Mr. 99 anyway.