[geeks] Best media for personal long-term backup?

[nate at portents.com]

So I recently began the process of pulling out my CD-R discs that are 10
years old and older (I think my oldest disc is now 14 years) out and
transferring the contents temporarily to my NAS for re-organization and
re-archiving, and I need to decide on the storage medium again for the new
(old) archive.

DVD-R seems like the least expensive route to go for another 10 years or
so, but I'm still a bit wary of trusting my data to those organic dyes.  I
love the concept of magneto optical, the whole heating the substrate to
the Curie point so you can flip the magnetic field seems just fabulous,
combined with a real data cartridge.  Downside is I don't have an MO drive
and don't know how easy it will be to keep/use/re-aquire in 10-25 years
when I might need to occasionally get to or re-archive the data, but then
again within the next 10 years with data storage density going up on hard
drives and remote backup becoming increasingly common it doesn't seem
unreasonable that I'll be able to back the data up offsite and onsite
without too much trouble.

Anyone have any thoughts/experiences with this stuff?

- Nate