i've been using incipio's snap case for my phone. now that i got a white iphone, i'd rather just not use a case. i'm not a fan of any of the zagg-type of options, and just want something that will keep the back of the phone from getting scratched when it is set down. apple's bumper is not what i am looking for. i'm looking for a bumper that is really thin, but keeps the back of the phone slightly lifted off a surface. any good suggestions?