Head up with big-draw, 2 similar 20/40 hands

[duckman]

For me I raise/cap the flop and b-b unless faced with further aggression on the turn a good percentage of the time. I do this b/c my style is to jam draws and the nuts and I like to pressure people to make a mistake. So if you haven't recently jammed a FD this would be a good opportunity to do so. If you have been jamming a lot of draws recenlty than you FE is zero and I play the waititing to hit game.
I try and think of how my opponent is going to perceive me. If he sees me as a trappy player than jamming the flop is going to tell him I have FD+overs. Then you would be better off waiting for the turn.