After going though a lot of cases, i am finally settling on the Carbon fibre Cases, but not many reviews about these. Of all the companies who make carbon fibre cases, this one looks the best: http://www.pacrimtechnologies.com/detail.aspx?ID=154 But one thing that I am thinking is that all other carbon fibre cases leave the back antenna part of the iphone open so as not to cause any interference, but this case covers the WHOLE phone. So any performance issues? Anyone using ANY carbon fibre cases? Any opinions or advices?