I'm debating on getting either the 32 GB or the 64 GB myself. I'd feel really safe with 64 GBs, but $400 just seems like too much for something I may replace within a year.
I highly doubt you will need 64gb. I can't decide between 16 and 32gb. 32gb should be plenty for the average person, but u can save $100 by getting 16gb. $100 for 16gb more memory is kind of ridiculous(especially since the price difference between 32 and 64 is $100), but I still may end up getting the 32gb. I just hope I can decide which one I want before the 7th.