[Lmn55d]

Whoa, I Would bet the turn for sure. A lot of guys with TAG stats in this game play v. badly. He will often pay you off with a lower pocket pair and just doesn't want to get raised and put to a tough decision. If he has KJ, checking is only going to help you if he pairs up on the river. THere is more value in getting him to call you down with a lower pocket pair.

I guess there's an argument that he has 66 or the like and will check/fold the turn but would check/call the river if you checked the turn. But if he's good and he knows you're good he probably should check/fold the river even if you check the turn.

If you know he would never check a lower pocket pair here on the turn, intending to call, then by all means check it. If he doesn't know you're a good TAG, and instead for some reason thinks you're an aggro lag (not that unlikely), I could see him checking to get to showdown cheap.