If you're going to "backup" the dvds, and you want exact copies, you're gonna have to buy a dual-layer burner and only get dual-layer media(dual layer media is currently somewhat crappy quality). Otherwise, youre gonna be in for a lot experimenting and reading. That is the only way to make exact backups. Either that or split them to 2 discs each. That is also an option.
Otherwise, they will have to go onto a DVD5(single layer) and youre gonna have to learn how to use CCE and downsample them all and lose the extras as well. Its taken me years to master scenarist/cce method. However there are programs that sorta make it easier so. I do everything manually though so I couldnt advise you on that. You could decide not to use CCE for downsampling, however your dvds will all look like junk then and youll defnitely only be able to keep the movie only. The quality of all other apps out there are significantly lower than CCE.
If you decide to go dual-layer, ONLY buy verbatims. All other brands of DL media are currently poor. They are also about $2.00+ a disc, where as single layer discs are about $.17-.30cents each.
Thats about the shortest quick answer I can give ya. Hope that helps.
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