Well, I want a showdown with JJ in an 8BB pot heads up. I think check call is way better than bet/fold. He needs 7x, PP, or a missed draw more than 1/10th of the time for you to be profitable. I just don't think folding is an option. If you lead out with a bet he might fold one of these hands. If he has you beat he will certainly reraise. If you check, you might induce a bluff. Actually, I think this is a perfect check/call situation. I think you will be surprised by how often you win this one.