The only difference is finish. Both companies order in batches, so it depends on who ordered what and when. If you’re looking say for a 5.5” nickel, well then you’ll have to buy from whomever last imported that particular gun. But the guns themselves are all the same, made in the same factory. The two importers will sometimes do different spins on finish to try to set themselves apart. But when it comes to the military style blued guns, they’re identical except for the importers roll mark.