400nl FR on stars . where and what else.
villain runs about 16/7/2. According to PAHUD he folds to CB's roughly 70% of the time. However, we've played together quite a bit, and i'm sure he knows that I can be slightly on the LAG side. Still, he's a decently solid opponent. I think I should a mention that he's up maybe $150 or so over about 1k hands

onto the hand,

[Kc] in MP. Villain open limps in EP, i raise to $20 and get it HU
$44 pot. flop comes [Ks][6d]. he checks, I bet $32, he raises to $76.

At this point, what's our read? I think we have 4 basic options here.
1: fold. we think he has AA/KK/66 and wants action
2: reraise to $200. find out if he's making a play at a looser opponent. of course, with more than half our stack in here, can we fold if he jams?
3: flat jam against the reraise, as I might with a hand like [Td] in this spot.
4: smooth call, planning to either jam or fold to a turn bet, depending on size, feel, and the card that falls.

Open limping AA or KK full stacked+ in EP in 6 max isn't a usual play (for very good reasons). So those sets seem unlikely (and you have an A and a K of course).
66 is a possibilty (as is AK). Do you have any notes on how he plays small pairs or AK from EP (limps or open raise them - and would he re-pop pre-flop OOP with AK?)

He could have air/smaller pair but it's not a great flop to min CR a pre-flop raiser with a weak hand - an A or a K forms a big part of your range after all and a min raise would price a flush draw in if you have one. It would seem out of character for a solid TAG to make a move on you here unless you have him tilted for some reason.

I would figure his range for flush draw (maybe with a piece of the flop say or ), another AK or 66. He possibily could be playing AQ/AJ etc and raising for info to see if you really do have an ace.

I think that a set forms a small enough part of his range that you have to be happy to get it all in, but also suspect that the hands you have destroyed are going to fold for sure to a re-raise whereas the others won't mind one. If he is looking for info why give him it?
As you have position, I'd flat call and look to get a pot-comitting chunk in on any non diamond turn (checking behind a diamond turn of course if he gives us the chance). If he has 66 so be it - just hope that turn/river ace or king falls

I think I flat call and get all in on the turn. I would probably do it even if a hits because not many nits check raise flush draws.

I can't fold this, but BOY does this look like 66 and only 66. I call and eval turn.

TAG with a 7 pfr who limp-calls a pfr, then CR's a flop with a rag in it? He's got a set.

Yeah, for AA/KK, I don't see the limp without a limp-re-raise. I like option 4. See the turn and re-evaluate. You have position and 4 outs vs. 66. Unclear how he'll play on the draw. Mini-bet on JTs here is a bit unusual.

I really have to put him on 66 the vast majority of the time.