[W. Deranged]

Calling down is fine. The key point is that you are only folding worse hands much of the time by raising the turn.

This is a welcome opportunity to discuss free showdown raises. This situation is one where calling down is probably better, but if any of the following changed a turn raise/free-showdown line is better:

1. Villain is weak/somewhat skilled/whather, and might fold a weak Q to you. Then raising the turn is much better because you allow yourself to win a portion of the time you don't have the best hand. (This can be one of the best "bluffing" situations in poker, in that by putting in two bets on the turn that you intended to put in on the turn and river anyway, you may encourage an opponent to make a huge mistake.)

2. If the pot were not heads-up, particularly if there are players left to act behind you. Then raising the turn is probably better for protection purposes. You'd love opponents to fold overcards. Even if an opponent had called between you and the original bettor, raising is usually better to encourage the intermediate caller to pay double to draw or whatever.