a better line to take

Villian seems laggish 50/16/2, am i just calling down here?

Party Poker 5/10 Hold'em (6 max, 6 handed) FTR converter on zerodivide.cx

Preflop: Hero is MP with J[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="#CC3333">Hero raises</font>, CO calls, <font color="#666666">2 folds</font>, BB calls, UTG calls.

Flop: (8.40 SB) A[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
BB checks, UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">CO raises</font>, BB folds, UTG folds, Hero calls.

Turn: (6.20 BB) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

River: (8.20 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets</font>, Hero calls.

Final Pot: 10.20 BB

I think calling down is fine since your opponent is a LAG.

[Spicymoose]

I think I check raise the turn. CO might have a pair which we beat pretty often. Also, if he does have the ace, it probably isn´t that big of one, as he only cold called preflop. Therefore, you might freeze him up, and prevent him from value-3 betting this turn. Nevertheless, I do pay off a 3-bet as he is a LAG, and hope he is getting crazy with a lower PP.

i would also call river down