So if you were going to save date on DVD you would prefer to save it on Disk at once format?
why is that considered more stable?
Because the TOC (Table of Contents) isn't being appended due to mutliple burns. Like I said, one little problem, and previous sessions became very hard to recover.
I've actually had to attempt to reconstruct someone's drag-to-disc archives before... it was very much something I never want to do again.
Punch Cards -> Paper Tape -> Tape Drive -> 8" Floppy Diskette -> 5 1/4" Floppy Diskette -> 3 1/2" "Flippy" Diskette -> CD-R -> DVD±R -> BD-R
The Progression of Computer Media