I just received two sleeves of Penta golf balls from TM. Will be testing them against ProV1x and seeing how they compare. I tried them before and found that the ProV1 and ProV1x both outperformed the Penta, but what the heck, if they are going to send me golf balls free, I can always use them just in case I'm looking at a shot over water that may cause me to lose a ball.