Quite happy paying for Crashplan at the moment but Google Drive has the allure of instant access to files with a nice API... no heavy desktop client.... complete control how you access them.... I have 4-5TB total between my photography and other work.

This IS an Amazon Glacier killer if nothing else :)

Really hoping within the next 5 years someone finally comes up with the large capacity optical discs they keep promising. Bluray discs will fit in bank safety deposit but it's still a lot of hassle.