Thanks - just bought a spindle of 30 Verbatim 8X discs from Newegg...
I'm usually content with compressing DVDs down to 4.7GB, but for some Concert DVDs, I want to make full backups particularly so the audio isn't sacrificed.
I'm not really sure if the compression that Toast does pertains only to audio or video or both, but I'm guessing both...
Cheers.