I buy mine of eBay, they have nillon bristles suitable for a Falcon. They aren't quite as good as the cotton ones but are cheap and seam to do the job.
I recently discovered a brand called Bringham the same people that make the pipes. The metal inside seems to be a little stronger than Long's or the Tom and Jerry's
I get along just fine with Dill's, regular and bristle. I wish they were a bit thicker, but they shed shed a lot less fuzz than the fluffy BJ Long's, so I guess it all evens out.