I'd like to get the max capacity because I have, of late, begun to do more editing of my photographs on the iPad. Only 1000 can be in iCloud/photostream, and sometimes you just want to have them on the device, permanently. I've been making do with 16GB, but really, even with cloud services, its not enough for my photography and apps.
Anyone buying their last ever, or for a long time, should probably get the max possible. Wish I had considered that, when I was doing it.