Got to throw both today, and all I can say is wow. The Hy-Road X is a Hy-Road, so of course, it's good, longer than I was expecting with more angle, I'll probably sand mine to 4000, and the PhysiX is very NRG dominant, which I think is good, considering how gimmicky the core looks, it is definitely strong but seems versatile with different hand positions but then again every ball is if you know what you're doing.