The love of audio. It's a dangerous condition, because every minute spent obsessing over headphones or specs or conflicting opinions is a minute not spent enjoying your favorite tracks or discovering new ones. That's why a review like this, which compares the iPhone 5 with rival phones based largely on acoustic qualities, runs a high risk of time-wastage -- no one really needs a cacophony of flowery words with no concrete conclusions. How to steer clear of the technological equivalent of a wine-tasting? By trying our damnedest to focus only on the more practical pros and cons of these to