Blind vs Blind, Tough river decision

[johnbeans]

Villain is 18/15/2 over 500 hand, but most of these hands are datamined since I have no history with villain. I suspect he is 2p2 because of his name. Overall the guy seems solid.

Full Tilt Poker No-Limit Hold'em, $1.00 BB (6 handed)

Hero ($174.50)
UTG ($56.10)
MP ($111.50)
CO ($94.95)
Button ($128.25)
SB ($101)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">4 folds</font>, <font color="#CC3333">SB raises to $4</font>, <font color="#CC3333">Hero raises to $12</font>, SB calls $8.

Flop: ($24) 3[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $18</font>, SB calls $18.

Turn: ($60) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

River: ($60) T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $71 (All-In)</font>, Hero ?