i watched Sydney Golf Tech's (SGT) youtube review and it seemed like there's not much to sway me to move to ZX7 MkII...my quick reaction is there is a bit higher spin and a difference in ball flight (i don't recall what the difference was since i was trying to listen to my wife at the same time )...that being said, i was leaning toward the ZX5 MkII anyway and i know it's only one review but his swing/ball strike seemed pretty consistent and his overall performance seemed pretty even. i think the added spin would help me in the 7 so i wonder if the 5 gets the added spin as well.