I like larger bets and raises all the way. The villians line stinks of a flopped set. Probably %60-%70. An over pair is also a possiblity but you'd think he'd define his hand with a bet or c/r before the flop got too big. A bluff with a missed st8 draw is also a possiblity. However, without a read on the villian it's difficult to put him on that play. IMO, the call on the end was a mistake.