"So if I were to replace it with a Motiv ball, which comes closest to the Hy-Road?"
This leads me to believe that he wants a ball similar to the Hyroad. Yes I realize I'm answering a question he didn't ask, but if several people suggest the Tribal Fire and he gets one only to find out it's quite different from the Hyroad, he will most likely be very disappointed. In my opinion, Motiv does not currently have a ball close enough to the Hyroad to even make a comparison, and I feel that is more relevant information.
If I walk into a bar and ask for an oatmeal stout and they tell me the closest thing they have is a Newcastle and I go ahead and buy it, I'm not going to be happy. If they tell me they really don't have anything close enough to suggest, then they're giving me the information I'm really after. I may then select a different beer and really enjoy it, such as Jorge may really like a Tribal Fire. I would suggest that if he wants to try a Motiv ball, he may look to replace something else in his arsenal that may be a closer fit or match, and look elsewhere at the moment for a Hyroad replacement.