At .5/1 Party tables I think it is very read dependent on the person you are heads up with. There are several people who simply won't fold if they have a peice of a flop heads up. Not when there are over cards on the board, not when they've been c/r'd and re-raised and bet into on every street. Yes, you want to play those people. A lot. But you also need to show down a hand with them.