Does the 5C's plastic back give it an advantage over the 5S in terms of Wi-Fi and cellular reception? I know that the iPhone 4 (glass back) has better Wi-Fi reception than an iPod touch 4th gen (metal back). Then again, the iPhone 4 has external antennas and the iPod touch 4th gen does not. Anyway, if the 5C does have better wireless reception than the 5S, that may tip the scale for me toward the 5C.