Playing at Cake so no stats on him.. I just moved up to 200nl so I don't have notes either. He hasn't done anything crazy or weird yet this session.

No-Limit Hold'em, $2.00 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Button ($30)
SB ($204.80)
Hero (BB) ($265.60)
UTG ($277.80)
MP ($225.60)
CO ($156.75)

Preflop: Hero is BB with A, 5
4 folds, SB bets $6, Hero calls $5

Flop: ($14) J, 4, 7 (2 players)
SB bets $9, Hero raises $28, SB raises $59, Hero ???

What is he 3betting with in this spot?
If its always strong then I should call, if I think sometimes he's bluffing then shove?
do you play differently preflop?