Preferably MRC, but single-coated is not a deal-killer (and cheaper). Got one you're not using?
Yes, I know there are other manufacturers, but all my other filters are B+W. Irrational or not, I'd like to keep it in the family.
Yes, I know there are other manufacturers, but all my other filters are B+W. Irrational or not, I'd like to keep it in the family.