AK 3betpot turns TPTK

[danny8]

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 4 Players - (LegoPoker Hand History Converter)

Hero (SB): $49.90
BB: $52.00
UTG: $8.95
BTN: $70.00

Reads: <font color="blue">villains 30/13/2 over ~100 hands, havnt seen anything remarkable, i havnt done much this session, just playing taggish</font>

Preflop: Hero is dealt A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img] (4 Players)
UTG folds, <font color="red">BTN raises to $1.50</font>, <font color="red">Hero raises to $5.50</font>, BB folds, BTN calls $4.00

Flop: ($11.50) 7[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $8.00</font>, BTN calls $8.00

Turn: ($27.50) A[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero...

im lost here... do i check or bet? a bet commits me so i cant fold if he shoves...

whats your plan and why?