21st century data backup

[John_Toolbox]

I'm curious to see what everyone else is using for data backup these days. For me, CD-R's have always been stable, but they are a pain to label, sort and keep track of, especially since I often need to split a project up among several of them.

I have not had good luck with using DVD's for backup, I tried to use something I burned to 2 DVD's only 2 years ago and I could not get it to read. It wasn't a total loss, it was rendered video that I was able to re-render, but nonetheless annoying. I'd say one in 5 retail dvd's that I buy skips, pixelates, or simply doesn't play... This has pretty much convinced me not to use them for anything I want to make a stable backup of,

Recently I've been using usb flash drives and/or compactflash cards for backup, I figure there's no moving parts in them, they can't get scratched like cds and I've never had one fail me yet. The price is right too, I can back up most projects for about $10.

Anyone else have any thoughts on this? Is flash memory stable over several years for archiving purposes?