[Nate tha' Great]

A calldown is probably more profitable than a 3-bet against a typical opponent. If you know him to overplay his hands, especially in potential semibluffing situations, then you can 3-bet here or perhaps call and raise the river if a blank comes off.

The situation is also different if the board on the flop were say 842 rainbow. If he check-raised that board when a king came on the turn, it is quite likely that he also has one pair, and you've got the nut kicker. Here, however, he could easily have QJ, 99, TT, KT, K9s, T9s etc - there are a lot more hands in his playing range that beat you. I would just call down.