What min edge should I use for calling in SNGPT?

[Slow Learner]

PokerStars Tournament, Big Blind is t200 (6 handed) Converter on pregopoker.com

UTG (t3035)
UTG+1 (t2995)
CO (t3240)
Button (t975)
SB (t1590)
Hero (t1665)

Preflop: Hero is in BB with XX:
<font color="gray">UTG folds</font>, <font color="gray">UTG+1 folds</font>, <font color="gray">CO folds</font>, <font color="gray">Button folds</font>, <font color="red">SB raises to t1590 (All-in)</font>, Hero ???

This situation occurs often in 27s &amp; 60s. Villain is an absolute ATC pusher. If I use the 0.5% standard then I should be calling with 45% of hands. However, as I feel I am one of the better players at the table, I should be able to get myself into better situations later in the tournament.

On the negative side, obviously an ATC pusher will continue to push every orbit so I wont get long to make my move.

What % min edge do others consider needed before calling in this situation? FWIW, I wouldnt consider anything like loose calling with a view to sending a message as these type of one dimensional players arent generally cleverer enough to take note (JMHO!)

Thanks in advance for any responses.