PLEASE NOTE STACK SIZES

I haven't played with Marshall much, he is spewy and aggro though, and seems so far that he really wants to take advantage of the fact he's 250bb deep in position. However, he hasn't gotten the opportunity yet. He plays like 23/20 with heavy aggression in EP rather than LP. I've never seen him call a threebet like this, your guess of a range is as good as mine. Also if you don't fold please tell me call or shove turn. Alternate flop lines are fine as well (If you say fold here you may want to express we should check the flop).

Relevant hand: We are deep about same stack sizes, I raise pre with ATs, he calls on the BU with JJ. He calls three barrels with bottom set on a KQJ flop with turn and river blanks.

POKERSTARS GAME #14803832463: HOLD'EM NO LIMIT ($2/$4) - 2008/01/25 - 00:20:34 (ET)
Table 'Tsai' 6-max Seat #1 is the button
Seat 1: DO IT LEE ($547.70 in chips)
Seat 2: heybude ($1434.70 in chips)
Seat 3: Marshall28 ($1239.70 in chips)
Seat 4: seki09 ($408.90 in chips)
Seat 5: willybeer22 ($390 in chips)
heybude: posts small blind $2
Marshall28: posts big blind $4
*** HOLE CARDS ***
Dealt to heybude [Qh Ah]
gary8888 has returned
seki09: folds
willybeer22: folds
DO IT LEE: raises $12 to $16
heybude: raises $36 to $52
Marshall28: calls $48
DO IT LEE: folds
*** FLOP *** [7d 3h Ac]
heybude: bets $84
Marshall28: raises $124 to $208
heybude: calls $124
*** TURN *** [7d 3h Ac] [2d]
heybude: checks
Marshall28: bets $388 (about $580 left)
heybude: