I've had the Mophie battery case since the first day it was released, and I love it. I do wish it had some texture, wasn't so smooth, but that wasn't a deal breaker. Neither was the fact that it could get scratched; I'd rather have the case scratched, than the phone. You don't have to remove it to sync it, just use the included USB cable and plug it in, iTunes will recognize it as usual. If you allow the phone to go down to 20%, switch over to the battery and then make calls immediately, you might have issue. Otherwise, it's great. I have everything running (3G, WiFi, location services and it last me from 6am to midnight. I never worry about usage, and I use everything, a lot.