What I really like about the Apple silicone and leather cases is the felt that is in the layer between the phone and the case itself.
Most other cases start to trap small particles, that inevitably start to sand away at the edges and rear of the phone. The felt lining int he Apple brand case largely prevents this from happening. My 7 Plus looks like brand new in the Apple case, where as the device that it replaced was in off-brand (Speigen, Peel, Speck) cases and those cases all trapped small particles between the phone and the case.