400NL 2 very different river spots, what the best action?

[dirtytricks]

villain is tagreg 20/16 no special reads

Full Tilt Poker, $2/$4 NL Hold'em Cash Game, 5 Players
LegoPoker Hand History Converter

BB: $502
Hero (UTG): $398.50
CO: $779.20
BTN: $406
SB: $783.60

Pre-Flop: K[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $14</font>, 3 folds, BB calls $10

Flop: ($30) 3[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">BB bets $23</font>, Hero calls $23

Turn: ($76) 6[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $44</font>, BB calls $44

River: ($164) 9[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">BB bets $100</font>, Hero??


Full Tilt Poker, $2/$4 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

Villain this hand is 21/17 tagreg, seem pretty abc but sure solid.

Hero (MP): $400
CO: $268.10
BTN: $400
SB: $529.30
BB: $577.90
UTG: $364

Pre-Flop: A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] dealt to Hero (MP)
UTG folds, <font color="red">Hero raises to $14</font>, 3 folds, BB calls $10

Flop: ($30) K[img]/images/graemlins/club.gif[/img] 4[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $23</font>, BB calls $23

Turn: ($76) 2[img]/images/graemlins/heart.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $66</font>, BB calls $66

River: ($208) J[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">BB bets $132</font>, <font color="red">Hero??