Flopped top two pair on bubble, villain gets weird.

[imported_metrognome7]

I feel I played this as about as well as I know how - which isn't saying much. [img]/images/graemlins/wink.gif[/img] I realize that I got into a tussle with the only stack at the table that could bust me, but I'm looking to win and I wanted chips. Did I make a mistake on the turn, is this a legitimately bad beat, or did I just get 0wn3d?

$5+.50 SnG on FullTilt
Blinds are 100/200
UTG (t1400)
Button (t2100)
Villain/SB (t6600)
Hero/BB (t3400)

Villain has played big stack poorly; he's generally weak-tight but has sucked out several times.
Button is a rock who's been waiting around for someone else to bust and will only get into hands with AT+ and PPs - hence I don't PF raise.
I was the short stack as recently as 10 hands ago but I've been bullying as much as a I can.

UTG folds
Button calls 200
Villain/SB completes
Hero <Q[img]/images/graemlins/club.gif[/img]7[img]/images/graemlins/heart.gif[/img]> checks

Flop Q[img]/images/graemlins/heart.gif[/img]7[img]/images/graemlins/diamond.gif[/img]3[img]/images/graemlins/spade.gif[/img]
Pot 600
Villain checks
Hero bets 500 (Trying to win it right here.)
Button folds
Villain calls (Figure him for Q9+, A7, or A3)

Turn <Q[img]/images/graemlins/heart.gif[/img]7[img]/images/graemlins/diamond.gif[/img]3[img]/images/graemlins/spade.gif[/img]> 5[img]/images/graemlins/club.gif[/img]
Pot 1600
Villain checks
Hero bets 1000 (I'm instapushing any river if called.)
Villain thinks for a while and finally calls

River <Q[img]/images/graemlins/heart.gif[/img]7[img]/images/graemlins/diamond.gif[/img]3[img]/images/graemlins/spade.gif[/img]> <5[img]/images/graemlins/club.gif[/img]> T[img]/images/graemlins/heart.gif[/img]
Pot 3600
Villain bets $1000
Hero raises all-in for $1700
Villain goes into the tank; after a long think he calls

Results in white:
<font color="white">Villain shows 6d4c for a 7-high straight
Hero shows Qc7h for two pair
Hero finishes in 4th place </font>

If I played this like crap, let me know. Only by asking and receiving criticism can I hope to improve...

Thanks,
Adam