I found a ProV1x "PRACTICE" ball today and played two holes with it. I don't know what kind of "practice" it had been through but it felt nothing like a regular ProV1x. I played both balls on the 2nd hole and there is a pronounced difference in feel and ball flight. I've seen the PRACTICE balls for sale for about $15.00 a dozen cheaper, but if this one ball was any indication, don't waste your money. This practice ball didn't perform anywhere near what even a well used regular ProV1x does, and it's certainly not the ProV1x I'm used to playing.