[BobboFitos]

calling, raising, and folding are all close.

edit: the best choice is opponent dependant and table dependant. and, what your turn play is. (the better you play, the more flexibility calling now gives you rather then raise now to essentially turn your hand into a bluff)

the cold fact is this guy plays every other hand, and bet at a pot next to last. his hand range is very wide. unfortunately, alot of his hands have equity vs you, whereas you will probably neither make a better hand fold nor draw out on a better one. it's tough to label my standard play, as said, because they're all close.