User blog comment:B214/Question & Answers 5/@comment-27989561-20150410214140/@comment-24502975-20150410221116

It's fine, I was new to this before I ordered DX.1 too.

It depends how fast you want it. I used registered air mail and got it a couple weeks later. Scans will be out before you could receive your copy with the fastest shipping so I don't think that matters too much.

TL;DR Registered airmail or airmail are best. The only difference is that with registered airmail you gotta sign for it and you get to track its location.