Playing along: 4-bet pot semi deep in position

Villain in this hand is AlotofFaction, an aggressive TAGG that i don't have a lot of history with. He doesn't seem very tricky, and he has been 3-betting a little light. He's running about 21/18.5 on my PT.

I think this hand is interesting because there are a lot of ways to approach it. I probably 4-bet too small, making it 130 would've definitely been better. If you choose to bet the flop, the sizing is very important.

PokerStars No-Limit Hold'em, $4 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($238.30)
SB ($700.70)
BB ($720)
UTG ($401.40)
MP ($969.05)
Hero ($685.40)

Preflop: Hero is CO with Ahttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif.
2 folds, Hero raises to $12, 1 fold, SB raises to $48, 1 fold, Hero raises to $112, SB calls $64.

Flop: ($228) 8http://www.flopturnriver.com/phpBB2/...es/diamond.gif, 5http://www.flopturnriver.com/phpBB2/...miles/club.gif, 2http://www.flopturnriver.com/phpBB2/...miles/club.gif (2 players)
SB checks, Hero ?????

Given your reads i dont think you can bet the flop so definetely check. I probably fourbet more though, you actually may be giving set odds given how deep you are. Fourbet to 148.