FTP 6max 322

[oldschool043]

my read on villain is he seems to be a fairly tight player, not especially good. i saw him slowplay a flush to death earlier...

Full Tilt Poker Game #3501492021: $50,000 Guarantee (25916927), Table 3 - 100/200 - No Limit Hold'em - 17:06:36 ET - 2007/09/08
Seat 1: Zugwat (4,050)
Seat 2: KramerTM (10,755)
Seat 3: oldschool043 (3,300)
Seat 4: parapokwins (2,810)
Seat 5: QuantumMechanic (2,608)
Seat 6: PiMaster (2,665)
QuantumMechanic posts the small blind of 100
PiMaster posts the big blind of 200
The button is in seat #4
*** HOLE CARDS ***
Dealt to oldschool043 [Th Ad]
Zugwat folds
KramerTM folds
oldschool043 raises to 500
parapokwins calls 500
QuantumMechanic folds
PiMaster folds
*** FLOP *** [6s 5h Ts]
oldschool043 checks
parapokwins has 15 seconds left to act
parapokwins bets 300
oldschool043 has 15 seconds left to act
oldschool043 has requested TIME

?? i almost always lead / call a shove here and a check fold here is soo weak but i don't know what he flats behind with besids AA/KK with our stack sizes... thoughts?

and his flop bet is so suspicious.. then again its an unknown donk.