What's the Right Move Here? Final Table of $20K Guaranteed $3R

[Chomper4]

The BB has been very aggressive and doing alot of restealing, especially against me since there were about 16 players left. Everytime I raised and he played back at me previously, I had folded. Is this a push, call, or fold in your opinion?

PokerStars No-Limit Hold'em Tourney, Big Blind is t60000 (8 handed) internettexasholdem.com

BB (t2235642)
UTG (t1332163)
UTG+1 (t2014088)
MP1 (t1109802)
Hero (t991644)
CO (t1045360)
Button (t649454)
SB (t3125347)

Preflop: Hero is MP2 with Q[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises to t180000</font>, <font color="#666666">3 folds</font>, <font color="#CC3333">BB raises to t480000</font>, <font color="#CC3333">Hero ??