QTo, middle pair on the button, look good?

(grunch)

Flop: bet looks good--are you folding to a c/r? It looks like you're not expecting that here.
Turn: Bet it--I think you clearly have the best hand here.
River: I might check this down if there are still players in the pot. It is a small pot, and I think you'll see someone with K-rag here often. In your case, the bet seems good after the check-around on the turn. SB would be betting out on the river in most cases if he wanted to make a BB of his hand.