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How loose do you think villain will call your 3-bets? How loose do you expect him to stack off? I'm inclined to bet here to own KdKx-QdJx, but if he calls 3-bets quite loose this middle ranged flop indicates a check back to me. Here's a stove that shows a bet is pretty close:

equity win tie pots won pots tied
Hand 0: 48.636% 44.55% 04.09% 294 27.00 { AcAd }
Hand 1: 51.364% 47.27% 04.09% 312 27.00 { KcKd, KdKh, KdKs, QcQd, QdQh, QdQs, JJ-TT }

You don't have to get called by KK without a diamond very often for it to be clearly good.