$55 ITM: Defend my blind w/ATo vs bigstack blind stealer?

[AA suited]

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (3 handed) converter

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">HERO (t1840)</font>
Button (t4380)
<font color="#C00000">SB (t3780)</font>

Preflop: HERO is BB with A[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">SB raises to t400</font>, HERO? [img]/images/graemlins/confused.gif[/img]

4 and 5 handed, he's been contantly stealing blinds from the smaller stacks. I've seen him fold once to all-in reraise by the blind. Another time he called with k7s and sucked out.

Now that we're ITM, i'm now to his left.

I see 3 options:
1) Call and check/fold if the board doesnt hit me
2) Stop N Go
3) Re-raise all-in preflop

Which would you do? Why?