The Moto X does not have SD support? This is one reason I would never buy an iPhone (and laugh at those who do when they complain they are running out of space). Definitely not getting the X now, especially considering it's limited to 16 GB. Google is obviously pushing people to pay for the Google drive, which is something I will never do (even if it means I stop buying Android).
$60 per year would buy a ton of SD storage.