PP NL 100 6max turn decisions

[Spellmen]

Villain has been at table for 10 hands or so and hasn't showed anything significant down. Is this turn action fine or is a bet/fold a better line? I hate betting these types of flops out of position and then getting in a spot like this.

Party Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players
Converter

Stack sizes:
UTG: $40.32
CO: $166.20
Button: $64.51
Hero: $97.90
BB: $98.55

Pre-flop: (5 players) Hero is SB with Q[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/spade.gif[/img]
UTG calls, CO calls, Button calls, <font color="#cc0000">Hero raises to $4.5</font>, 3 folds, Button calls.

Flop: 3[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/club.gif[/img] ($12, 2 players)
<font color="#cc0000">Hero bets $10</font>, Button calls.

Turn: 9[img]/images/graemlins/club.gif[/img] ($32, 2 players)
Hero checks, <font color="#cc0000">Button bets $20</font>.
Hero folds

This hand played out a little weird, I was going to check turn but felt that villain was weak/drawing so I bet. River is a no brainer for me, but do you still fold if you have AK or AA here?

Party Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
4 players
Converter

Stack sizes:
UTG: $92.50
Hero: $99
SB: $194.60
BB: $89.50

Pre-flop: (4 players) Hero is Button with Q[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/spade.gif[/img]
UTG folds, <font color="#cc0000">Hero raises to $4</font>, SB calls, BB folds.

Flop: K[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/heart.gif[/img] J[img]/images/graemlins/heart.gif[/img] ($9, 2 players)
SB checks, <font color="#cc0000">Hero bets $8</font>, SB calls.

Turn: 8[img]/images/graemlins/club.gif[/img] ($25, 2 players)
SB checks, <font color="#cc0000">Hero bets $16</font>, SB calls.

River: 4[img]/images/graemlins/heart.gif[/img] ($57, 2 players)
<font color="#cc0000">SB bets $25</font>, Hero folds.
Uncalled bets: $25 returned to SB.

Results:
Final pot: $57