@Greg42 - Man, that was bloody hillarious!
Yeah, I've got a bunch of them. If you check out my "Hooray for Ritek!..." thread I explain possible differences in degradation between spindle codes. (I'm just assuming that L23 must refer to the spindle code shrug) Nothing concrete, as all my L23 and L25 burns are really too new compared to the codes that have all failed already. So far those ones are ok, but I've backed them up and really don't have high hopes. I'll be putting up further scans of all the disks I used to test in that thread.
So far pretty much every 05L, 22L, 21L and 08L disk has either died completely or is in the process of dying. The 23L's I have "might" be ok, but I'm not about to gamble on it. Best of luck if you buy them. Remember, cheap media is usualy cheap for one reason or another and you can end up paying more in terms of not only replacement disks and failed burns, but in lost data. It's not worth it for my money.
EDIT: Â£9 for 50 disks inc. VAT. You can definiately get passable media in that price range, but you're in the "budget" market really at that price. Hey, it probably won't burn as well, but it will have less chance of doing a Mission Impossible self-destruct in a month or two.
One option is Datawrite Greys 8x dvd-r currently on discount delivery at SVP. I think they are prodiskF01, and honestly, they are burning very well in my BenQ1620 with latest firmware. Again, they are a budget disk, so I will be monitoring them very closely, and using most of them for other people. Heh. I expected much worse burns anyway, as I only bought them along with my TY as half the cost was covered due to the reduced shipping cost.
I'll probably be trying the TDK disks they have at SVP as well soon, just for fun. The +r's have had some good reviews around the net.