Sampo ball bearing swivels are the best BB swivels out there. That said, once they are used in the salt their performance starts to degrade. If you soak them in fresh water after every use they will perform longer. I always use a Sampo with a scissors snap on it attached to the end of my line on my salt specific gear. It makes for easy hardware changes. When I have bait spinning (hopefully) on the end I always have a bead chain in line to avoid tangles.