Which is the best media for long term storage?

[ElPolloDiabl]

Hi, Which is the best media for long term storage... A DVD-R, a CD-R, USB Flash drive, good quality hard drive, tape?

[ElPolloDiabl]

I use DVD-R at the moment, the only problem is that fingerprints after a few years turn sticky and are hard to wipe off. Also on 1 or 2 discs the silver material flakes off near the edge and the disc becomes squirly.
What I might continue doing is label the disc backup and lock it away for five years and then check on the condition. Otherwise I will load a 1 Terabyte hard drive and store that. Give it a check every few years and then maybe retire it at 10 years.