[paulw]

Bet/fold seems best, folding is easy to this villan when he raises river as I think you see a bluff very rarely, and his calling range is probably wider than his betting range if hes going to call with over pairs, which I would expect him to check behind most of the time. Having said that, we dont beat much else if he calls so you could make an argument for almost all options. Maybe your best option is getting a showdown as cheaply as possible to see his hand for future information?