Wont be able to get a Z30, i get all the gear in at my cost so need to be frugal. Will keep a weekly article on the passport/bb10 going though. As for the Z30 I just found the GSMarena test figures and the scores are really bad. When headphones are connected the total harmonic distortion is one of the worst I have seen on a mobile device. IMD Noise also goes through the roof but I would probably put it down to maybe a far poorer amp section than is found in the Passport. Or a fault in GSM's testing which is probably less likely.