I would choose TY's for sure. Great quality, and low error rates. I ran a surface scan on a couple DVD's and found 1-2 damaged blocks of data, but nothing can be 100%, I mean if you wanted 100% perfect go out and buy the real thing.
I made the mistake of frantically (sp?) looking for TY's ever since I heard of them from this forum, and bought 100 DVD-R, and found out they were knockoff one's.
Then I found out about blankmedia.ca and bought 100 DVD-R 4X (Media ID: TYG01) and they are the real deal.
Anything shown on blankmedia.ca are real they are not knockoffs ask anyone else who has purchased from blankmedia.ca very good products.
I'm about to buy 50 TY CD-R 52X, they are silver lacquer no lines, exactly as shown in the pic. Oh and also they leave some fingerprints..
hope this helps.