hand 1: villain is 31/16/4 over 80 hands at the time. Whats my best river line here. B/c, b/f, c/c?

Ultimate Bet No-Limit Hold'em, $.50 BB (4 handed) Ultimate-Bet Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

Button ($52.40)
Hero ($50)
BB ($71.35)
UTG ($80.65)

Preflop: Hero is SB with , . Hero posts a blind of $0.50.
UTG calls $0.50, 1 fold, Hero (poster) raises to $2, UTG calls $1.50.

Flop: ($4) , , (3 players)
Hero bets $3, UTG calls $3.

Turn: ($10) (3 players)
Hero bets $7, UTG calls $7.

River: ($24) (3 players)
Hero ???



hand 2: villain is 65/0/1 over 125 hands.

Ultimate Bet No-Limit Hold'em, $.50 BB (5 handed) Ultimate-Bet Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver Cards)

MP ($75.15)
Button ($21.95)
SB ($132.35)
Hero ($65.75)
UTG ($23.50)

Preflop: Hero is BB with , .
2 folds, Button calls $0.50, SB completes, Hero raises to $2.25, Button calls $1.75, SB folds.

Flop: ($5) , , (2 players)
Hero bets $3.75, Button raises to $16.25, ????Hero