James is right, I really meant stiffness in the context of impact, specifically how that relates to the push-back mount. True, they’re both made by KG, but even if the plastic’s density and wall thickness are the same, the design can have a huge impact on the shape’s ability to deform. Though I’ve never been too friendly with a FP7 nose, the bottom of their EVO nose, for instance, has a series of convolutions along the bottom, specifically to keep the nose from deforming. The OTK M4 and M6 are completely flat, allowing them to bow out to relieve pressure from impact.
It’s really down to vanity, however. Some know that, though they’re not elaborate, I enjoy designing my own sticker kit. Though the M6 nose is arguably the best at compressing and aerodynamics, it’s a royal pain in my a55 to sticker up. For a couple of reasons I’m not a fan of the FP7, and so I was looking for a viable alternative.