I just got the otterbox defender series for my iphone 4s and it offers amazing protection. I like everything about the case except for the fact that the outside silicon cover WON'T STAY in place and now its coming off. I just found out about the Griffin survivor case and this case looks very rugged. The question i have is that does the silicon on this case do the same thing as it does on the otterbox? I've also heard the case covers the light sensor and there is an annoying flap that covers the camera. Is this true? I'm thinking of getting that case but I don't know if its worth $50.