44 and a bad flop, checked to you and...?(1/2 6-max)

[lautzutao]

It's checked to you in the CO with 44 and you raise. Both blinds call.

The flop comes: A[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/diamond.gif[/img] 6[img]/images/graemlins/spade.gif[/img]

It's checked to you. What do you do in this situation against various types of players(ie. TAG LAG passive etc...)

Do you always bet, or always check?