My flatmate is getting an iPhone 4 today and I said I would get him a case for his birthday. He likes my bumper, but wants one to show off the silver sides. So I found a few different ones that have the bumper look with clear plastic round the sides. Which is the best one? I am looking for one with good build quality to the level of the bumper, price is not much of an issue. What would you suggest and where can I source one in the UK?