Last year I almost exclusively used used-balls with the justification being that surely a used premium ball like the Bridgestone RX is better than a Bridgestone e6 at the same price. It's a bit of a mixed bag because about half of the balls are really scuffed and good balls to use when water is in play and the other half are great-looking balls that feel fine. This year I don't care. I use whatever junk ball I happen to have and it plays about as well as any other ball. I do still swap to a premium ball for putting and use it exclusively Z-star in tournaments.