I also notice on my mx granites that the arch has a part that digs into your foot. Wheras my onyx pair are nice and flat... the granites were my first foam runner so I honestly didn't know if thats how they're supposed to feel... But having those onyx pairs now, they feel a lot better feeling more flat around the arch. If you look inside both pairs you'll see how the granites have foam that is pulled more into the shoe in between those holes, but the onyx doesn't. I ended up getting a 12 in mx granite and 11 in onyx. And the onyx feels better around the middle. Thats my main gripe with my granites, cuz after an hour my arch starts to feel a bit sore from the pressure. And I'm not flat footed. I have a fairly steep arch.
One more interesting detail. The MX granites on the inside writing say "FOAM RNR", whereas the onyx say "FOAM RNNR".. Lol Just something else I saw. And my production date for my onyx were newer than my granites. 😅 Anyway, i like both. But I absolutely love the onyx. I notice with the dark color, the shadows in the shoe gives it a much darker appearance. Which shows off a lot more of the sleek details in the foam... the mx granites don't have that same effect with the shadows and light. Still a nice cw imo tho.
