What gives me more EV?

[suited_ace]

Party Poker No-Limit Hold'em Tourney, Big Blind is t100 (7 handed) converter

CO (t2360)
Button (t1745)
Hero (t1035)
BB (t2115)
UTG (t1050)
MP1 (t655)
MP2 (t1040)

Preflop: Hero is SB with A[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, CO calls t100, <font color="#666666">1 fold</font>, Hero ...

I used to raise to ~300 in this spot, and after collecting some pretty nasty bad beats for not pushing it I started to just shove it.

Today I tried the milking approach and it made me wonder what is better in this spot. What is your default move here?