Resources on CD/DVD-R media
 

Yeah, so it's not only enough that the quality of your burn depends on the quality of your drive and speed, but also on the type of media.

I need a comprehensive site that can tell me what would be the best options for my Pioneer DVR-A09.

A good place to start would be here, they list which brands are most reliable. This is for CD-Rs, but it can be easily assumed DVD+-Rs from the same brands are as good. BTW I don't recommend Memorex (or anything else from CMC Magnetics), they make some flaky crap (it generally has a shelf life of 5 years or less is some cases).