Hi all. My daughter’s birthday is this month and she wants her first iPhone. I don’t have any spares so I considered buying used. But then I thought, maybe it’d be better to get her a new phone for the 1 year warranty. I’m considering two options: iPhone 7 128gb for $650 iPhone 6S 128gb for $550 The difference is only $100 but my question is, do you think the 6S would last her 2 or more years? Or, if I’m seeking longevity, do I go 7? That’s really my only hang up. Thanks!