50NL: Two pair facing reraise

[bluef0x]

Villain is 21/13/1.8 over ~60 hands. I really don't know how to play this after the reraise. Would a C/R been much more appropriate?

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $33.70
<font color="black">Hero (BB): $57.70</font>
UTG: $57.45
MP: $43.65
CO: $20.75
BTN: $52.65

<font color="black">Preflop:</font> Hero is dealt 5[img]/images/graemlins/heart.gif[/img] 4[img]/images/graemlins/club.gif[/img] (6 Players)
2 folds, CO calls $0.50, BTN calls $0.50, SB folds, Hero checks

<font color="black">Flop:</font> ($1.75) 4[img]/images/graemlins/spade.gif[/img] A[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (3 Players)
<font color="red">Hero bets $1.70</font>, CO folds, <font color="red">BTN raises to $6</font>, HERO ????

[mrw8419]

I call, c/c turn, and read his soul on the river.