[jakeduke]

I think you need to raise the flop for a few reasons:

1) probably have the best hand
2) any diamond/ace/4-8 is either an action killer or puts you behind
3) you need to protect yourself for when you raise here with air.

If I knew villain's range for doing this was {sets, big draws, 2pair}, then I call and reeval the turn, and then you have to get it in on a safe turn. readless though I think raising the flop is the best play.