I babied my iPhone 4 with an Incipio NGP and screen protector and this time around for the 4S, I am not going to bother with a case as it ruined the metal band. However I want to be able to place it on surfaces without scratching up the back of the glass. Can anyone recommend a good rear protector that I can buy without having to buy the whole kit? This time around I don't want a screen protector either. Does the matt finish version hide the scratches better than the crystal clear versions?