KQs - took some heat at the table for this one. hows it look?

[cs3]

I am in the CO with KQs. SB seems decent, hasnt played anything stupid and has shown down solid hands. Had a good sized stack until he lost a large pot when opponent sucked out on river.

I took a lot of flak from a couple of seemingly good players at the table (one was villian in this hand) for what i did with this hand. How would you play it? I am mostly concerned with my turn call. thought about a healthy raise but decided not to.. reasoning later. Also how much do you bet on river? Do you ever check behind?

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) FTR converter on zerodivide.cx

SB ($61.45)
BB ($35.75)
UTG ($49.25)
MP ($40.18)
Hero ($59.65)
Button ($100.10)

Preflop: Hero is CO with Q[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.25.
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, SB (poster) calls $1.75, <font color="#666666">1 fold</font>.

Flop: ($4.50) 2[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $4</font>, SB calls $4.

Turn: ($12.50) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $5</font>, Hero calls $5.

River: ($22.50) Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero???</font>