[Girchuck]

His preflop raise indicates a wide range of stealing hands.
This button is certainly on a steal, so you cannot give him credit for an A just yet. His stealing range will usually be a lot wider than Ax or a pocket pair. When he raises your bet on the flop, does this mean that he wants more action or less action? You don't know. Your hand certainly wants more action, because it is the nuts currently. If he raises a draw, as a 2,5AF will often do, you want this raise punished immediately. This because there is a good chance he is raising for a free card and you will not get any turn action. If he is raising a pocket pair, your 3bet might cause him to fold the turn, and you will lose an SB. If he is raising a weak ace, he might still be good enough to fold to your turn check-raise especially if the draw completes on the turn. However, if you re-raise flop, he will be calling his weak ace to the river more often, because flop 3bet is not as strong as turn check-raise. If he is raising a strong ace, he will proceed to cap the flop, and will call your turn and river bets, perhaps even raise your turn bet. If he caps flop, you still have an option of check-raising the turn.
The smooth call with a monster is not a default play here. It is a deviation play designed to make your game unpredictable. If you rarely re-raise a set in this situation, you are giving too much information to observant players and you are giving up too much value to aggressive players who raise their draws often.