Deep stacked HU match...Tough river decision

[ArmenH]

This HU match has been played very very aggro. Villain has shown down alot of funky hands. He is calling my 3 bets 90% of the time with a VERY wide range. A few hands back he showed down 8h3h in a 3 bet pot. He is very aggressive and not that good. In this hand I 3 bet QQ oop and he instacalled. What do you guys think of how I played the hand? Also, a side note to the hand , he very quickly called my flop and turn bet. Is this river a check call or a check fold? His range is so wide that he could possibly have a hand like A6...Would A6 snap call turn bet though? Also another note to the hand when i checked river he instabet pot. TY - Armen

Full Tilt Poker Game #3104867593: Table Fay (deep 6) - $1.50/$3 - No Limit Hold'em - 18:29:35 ET - 2007/07/30
Seat 3: sosog ($1,729)
Seat 6: AAROCKAA ($1,439.50)
sosog has 5 seconds left to act
sosog posts the small blind of $1.50
AAROCKAA posts the big blind of $3
The button is in seat #3
*** HOLE CARDS ***
Dealt to AAROCKAA [Qd Qc]
sosog raises to $9
AAROCKAA raises to $34
sosog calls $25
*** FLOP *** [3c Jd 6c]
AAROCKAA bets $54
sosog calls $54
*** TURN *** [3c Jd 6c] [4d]
AAROCKAA bets $144
sosog calls $144
*** RIVER *** [3c Jd 6c 4d] [Ah]
AAROCKAA checks
sosog bets $464
AAROCKAA ???