Whether or not your DVD drive can burn a particular brand of DVD blank has nothing to do with how long that blank will retain the data. Period.
Now, with that off my chest
, I've been searching for decent information myself on the subject of DVD lifetimes. There seems to be plenty of information on CD's, and the concensus has been that the only archival CD media is Mitsumi Golds, or Kodak Ultimata Golds (which, I believe are discontinued). All others are crap. Period. Some are so bad that exposure to bright light (as in a flourescent desk lamp) for more than a few minutes will produce noticeable signal degradation. Use the Imations and all that other cheap stuff for in-car copies of your music CD's, etc., but don't use them for anything you want to be able to read 10 years from now.
See cdsleeves.com for an indepth analysis of CD archival issues. The only other CD media I might consider archival is Maxell Pro. At least I can find it in small spindle packs in at least one local store. The Mitsumi's you will most likely have to mail order. None of the stores around here are cluefull enought to stock it.
As far as DVD media goes, the only claims for archival quality I've run across are from Vebatim, for their Datalife series of DVD media, but I've not found any independent lab reports to back up those claims. Lacking anything else, that's what I've been using until I come across something better. At that point, I'll be copying all my stuff over to the new media.
My only frustration with Verbatim so far has been that only one local chain (Office Depot) carries Verbatim DVD's at all, and they have only been stocking the older 2.4X DVD+R media in 25 and 50 pk spindles. I've found one area Office Depot with 15 pk 4x DVD+R's, but I have to stop on my way to/from my 37 mile daily commute (and go a couple of miles out of my way in heavy traffic) to get a spindle or two as needed. At least I haven't been using enough of them yet to make this costly enough ($30 for a 15 pk. spindle) to get me to mail order the suckers.
I've also been archiving all my DV camcorder raw video (12GB/hour) on these discs, so I can reuse my camcorder tapes, and also to collect enough video clips so that I can author up some subject-specific DVD's later.