There is only one choice for the best media, and it's not the one that you'll hear from just about any of the experts anywhere else
Maxell BQ Series 8x DVD-Rs.
It has a hardend coating to prevent scratches and fingerprints, and comes in a good quality DVD case (sells in 3-paks). You'll be looking at about $2-$3 per disc, depending on where you buy it. I don't know anywhere in the USA selling it at this time, but NCIX.com has it and will ship to the USA (it's on their current sale today too!
http://www.ncix.com/products/index.php? ... omoid=1001
$4.99 CAD / 3pk
If you want to see how it compares to MAM-A Gold, Delkin Gold, and Verbatim Gold, as well as other media, I have some professional and amatuer testing results showing in the subscriber's section currently (they're advanced results from my DVD Longevity Study). But you need to be a subscriber to CDRlabs to be able to access that forum section (sorry, but the results aren't public yet because they are still incomplete).
I hope that helps
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media