well of course a sampo ball bearing swivel will be the best by physical and engineering standards, but at a buck or mor a piece you won't be using them driftfishing or hardware fishing the rivers unless you are Bill gates.
If you like the Rosco's , you will love the Visions, twice the swivel at 1/2 the price.
Shoot me a e-mail and I will send you a couple to try or pick em up at your local dealer.
Peace Superfly