Where can I find an international version 64GB Note 5 with warranty?

[tentativeuser]

The question is all in the title. I can find 32GB international version Note 5's at Best Buy, and 64GB ones online, but the online ones don't seem to have anything like a comparable warranty, although hopefully I'm missing something. I need an international phone with a lot of storage and I'd like a Note 5. Such a phone is too costly to not have a good warranty on though. What are my options?

Thanks in advance.