Since you and Renton are too lame to respond to the other thread where I asked this question, I'll ask it here.

EP opens, solid MP player against whom we have no real history 3-bets and it's folded to us. Both us and MP have fairly deep stacks, like 150 BB or more. What range MP put us on if we cold 4-bet and what hands will he play against us? What if we flat? What would you do here with KK? AA? Would you ever cold 4-bet bluff? Do your answers to any of the above questions change depending on whether we're in the blinds or on the button?