Those who have hit the ZX7 and ZX5 side by side - did you notice any tangible differences in dispersion and distances?
Caveat is I'm rebuilding my swing after a long injury layoff. I found that I actually hit the ZX7 8i as long as the ZX5 7i. Yes, that makes no logical sense, but now after having hit ZX5 6-PW and ZX7 7-PW (same shaft, etc, off grass), I can say that my consistency of contact is better with the ZX7. I do hit the ZX5 6i quite well though, curious if I'd hit the ZX7 6i as well - that might be my breaking point.
I think it is pretty much due to the narrower sole getting through the turf better for my current swing, which is a tad steep and taking decent divots. I think most people would find a bit more distance with ZX5 and maybe better dispersion. But in my hands at the moment, ZX7 wins.