128gb for sure.
Apple has me by the *****, they know it and they know I will climb the $100 ladder of good better best every time. I did come close on my old 128gb Air, So not like I will not use it, but heck if they had 256gb I would find a way to fill that up too😀
I remember gas under $1 and 5mb of storage cost $400, so $100 for 64gb of extra storage is a steal, $50 to fill up my car still feels like robbery😀
Not like you would ever have needed it, or even be able to get it, but 64gb back then would have filled a house and cost over $200,000.