I think there is a difference between the two.

If I check-call, my opponent can't raise me with good hands and he may try to bluff. At the same time I miss value when he has a pair of 9s or 8s and would have called a bet.

If I bet-fold, I may gain a bet when my opponent is holding a 9 or 8, but have the chance of getting bluff raised out of the pot.

Since I have no read here, I assume loose passive. Bet-fold seems to be best versus this type of player because he won't try to bluff raise and I won't miss value. Now if the opponent were very aggressive or a maniac then I would tend to lean towards check-call because I want a showdown.
If you disagree please explain why because I'm really not sure of much in this game any more.