NL100: TPFD vs obvious set

[Greg29]

I used to auto-shove these, but now I wonder what is the best move. The villain is decent, and I HAVE to be behind right now. I know I have 0 fold equity at this point. I am almost positive this is a set, and he lets me draw relatively cheap. What is the best move: call/fold turn if I miss, or just shove the flop ?

These situations really annoy me, and I wonder what you guys do with a good pair/good draw when you are almost positively behind. Thanks.



Party Poker No-Limit Hold'em, $ BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($105.20)
SB ($188.90)
BB ($160.05)
UTG ($144.70)
MP ($113.60)

Preflop: Hero is Button with J, K. SB posts a blind of $0.50.
2 folds</font>, Hero raises to $4, SB calls $3.50, BB calls $3.

Flop: ($12) 6, 3, K (3 players)</font>
SB checks, BB bets $6,Hero raises to $15, SB folds, BB raises to $30, Hero ????