I'm going to be ordering a new 13" MBA as soon as I can answer this question. How much faster is the i7 compared to the i5?!? I'm sure there's others on here thinking the same thing. On the UK store the i7 costs an extra £100, which is fine with me if I'll see the performance gains, but if it's only 10% faster I don't think it's worth it. Anybody got any experience that could shed some light? Apple seems to be very non-specific about the potential gains and as there's none in the wild yet there aren't any geekbench scores. Any insight would be greatly appreciated.