400NL What is my best action?

[dirtytricks]

Villain is a TAGreg
20/17/4,7 and an aggression factor on flop like 6,4. Small loser over 7000 hands in my database. No history between us I can remember, might be 2+2

My image is TAG.

Full Tilt Poker, $2/$4 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

BB: $510
UTG: $448.80
Hero (CO): $406
BTN: $398
SB: $339

Pre-Flop: A[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/club.gif[/img] dealt to Hero (CO)
UTG folds, <font color="red">Hero raises to $14</font>, BTN calls $14, 2 folds

Flop: ($34) 6[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $27</font>, <font color="red">BTN raises to $100</font>, <font color="red">Hero??