Beside getting some quality time with the PXG 0211 driver this weekend I tested a new ball (to me). I played 6 holes with a ZT Tour Spin. This is a 3 piece ionomer covered ball. This ball has the softest non urethane cover that I've felt. I went between that ball and a Signature urethane ball in my hands a couple of times before I could tell the difference. Trajectory, distance and durability were good. After 6 holes there were a couple of minor scuffs...a lot of life left in this ball. These were under $16 a dozen at Amazon. 80 compression core.
Nothing to get excited about, but maybe if you have an order going in and your stash is low you might want to give them a shot.