Re: RAM difference
@Thomas: Personally, I find the numbers bafflingly huge for a smartphone. I don't even use 128 GB on my primary workstation!
And I find myself wondering: Who would want or need this much? On the one hand, it's easy to suggest that Apple is going for the market of hipsters who download five zillion songs and podcasts and apps.
But on the other hand, this suggests that Apple is even more fervently going after the highly-regulated (and thereby less cloud-friendly) mega-big data enterprises. Healthcare, life sciences, manufacturing, financial services, etc..
Certainly, as laptops become desktop replacements, and mobile devices become laptop replacements, the market is becoming all about storage and screen size (and in the case of the latter, Apple is certainly accommodating with its iPhone 6 "Plus" model, in addition to word that the next iPad will have a double digit-inch screen to better compete with the Surface Pro).