Hi - I have question about the Apple silicone case for the iPhone 6. We all know it feels great (it does for those who haven't felt it). I could be wrong but I don't think other silicone cases feel like this (am I wrong - let me know if so). I would like to know: - does this feel last on the material? Ie will it feel the same in say 6 months? - I've read the black case has more oil stains etc after using it. Is the material different or is it the colour? Does that feel the same? Thanks!