TPTK in multiway pot

[NicholasJ]

Nothingcrazy with this villain.

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $2/$4
6 players
Converter

Stack sizes:
UTG: $582.50
UTG+1: $262.30
CO: $376
Hero: $400
SB: $262.20
BB: $138.70

Pre-flop: (6 players) Hero is Button with A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img]
UTG calls, UTG+1 calls, CO folds, <font color="#cc0000">Hero raises to $22</font>, SB calls, BB folds, UTG calls, UTG+1 calls.

Flop: A[img]/images/graemlins/heart.gif[/img] 6[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/club.gif[/img] ($92, 4 players)
SB checks, UTG checks, UTG+1 checks, Hero checks.

Turn: 8[img]/images/graemlins/heart.gif[/img] ($92, 4 players)
<font color="#cc0000">SB bets $40</font>.


Is the flop check terrible? What is the best move on the turn given the action?