I'm planning to upgrade my iPhone 4 to WP8, but I'm conflicted as to which phone to get. I definitely prefer the specs of the M8, but I'm concerned about its lack of updates; after all, Nokia is a Microsoft company now. In short, is it worth giving up the specs I like in the M8 in order for the more secure and consistent updates of the Lumia series? PS: If I decided to get a Lumia, I would go with either the 1520 or 830 (I'm on AT&T.)