I just got my iPhone4 not long ago and now I am looking for a case for protecting my iPhone4 from scratches and dust. My friend told me that the wood or bamboo cases are very hot lately, then I found a flip-open wood case which seems pretty good ( http://www.********.com/royal-flipo...-protective-case-px8ffk-mhc10881-p-11610.html ). But would it be a little heavy and not so convenient? I also found a back case sticker like this http://www.********.com/stylish-vin...ack-case-sticker-px8ffk-msc14546-p-13953.html , it looks also awesome. Which kind would be better or you prefer to choose?