Smooth call the flop?

[veganmav]

UTG is maniac, raising 45% of his hands this session. Very LAG!. 42/14/1.7

SB is OK with 17/9/1.9

Party Poker 15/30 Hold'em (9 handed) converter

Preflop: Hero is MP3 with A[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">1 fold</font>, SB calls, <font color="#666666">1 fold</font>, UTG calls.

Flop: (10 SB) 4[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets</font>, Hero..?

This is what I'm thinking.
I'm very probably ahead here, and my two opponents are very probably drawing very slim. I strongly feel that the SB is going to fold, and UTG is LAG and will bet out the turn as another bluff. My main question is isn't it better to go into check-call here. Let him keep bluffing his chips away to me as he's drawing very slim. I could even check call flop, check call turn, and pop the river, or bet it if he checks it.