Absolutely, I agree with everything you have said (Gage and Agomes), but I see that you are talking about authoring and/or editing. My approach is different as I would be interested in copying. So, let's say that somebody lends me a DVD-R disc with VOB files full of video clips from MTV or VH-1, and I want to copy it. By using the computer, aside from the logical option of copying to another DVD-R disc (or +-RW discs) with the same VOB files, there is the option of copying these same VOB files on DVD-RAM discs as data. These VOB DVD-RAM discs are obviously fully compatible with computer drives, and conceivably with (how many?) standalone DVD players that can read data from DVD's (like, I suppose, the standalone DVIX players if they also support DVD-RAM).
Now, I think I know the two top questions you might be wondering. First of all, why copying to DVD-RAM discs? Because of their better reliability and better protection when they come enclosed in cartridges. Second of all, why bothering with VOB files when you can use the native VOR files in the DVD-RAM discs? Simply because, if I want to re-record my video clips onto DVD-+RW discs, it is much easier to use VOB files to then be placed on DVD-+RW discs as opposed to using VOR files, change them to VOB files, to then be placed on DVD-+RW discs.
In short, I would like to use DVD-RAM discs as a sort of master and bridge medium. In point of actuality, this means to copy from DVD-+RW to DVD-RAM discs, keep the DVD-RAM discs as point of reference, and then, when needed, subsequently copy from DVD-RAM discs back to DVD-+RW discs, keeping the same VOB files all the way down. Of course, there is nothing wrong if you use DVD-+RW anywhere in the process; I just happen to think (personal opinion) that DVD-RAM discs are more reliable and better in general.
Carlos Albert Lacaye
discomakberto at megamixers dot co dot uk