Live 5-10NL facing a river bet

[GTL]

Villains table image is solid tag. I just sat down and have 1500 in front and Villain covers.

Have played with villain once before and he is capable of making some moves but didn't splash around very much. Live stradle. Villain open raises to 80 from mp. I smooth call with AJ of clubs from the button. Straddle calls.

Flop A [img]/images/graemlins/spade.gif[/img] K [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/club.gif[/img]
1 Check, Villain bets 125, Hero calls, 1 fold.

Turn 5 [img]/images/graemlins/heart.gif[/img]

Villain bets 300, Hero Calls.

River 4 [img]/images/graemlins/club.gif[/img]

Villain bets 875

What kind of range can we put a solid tag on here? Anybody play the hand differently on any street?