Best Android: OnePlus One vs S5 vs One M8 vs Xperia Z2 vs LG G3

HTC, Samsung, Sony and LG have each now unveiled their flagship handsets for 2014, plus we've seen some outside competition from startup OnePlus. But which is the best Android phone 2014? We compare the S5, Z2, G3, One M8 and OnePlus One spec for spec.