[QUOTE=troy512;2188676]an ISO file contains the Video_TS & Audio_TS folders. as long as your software supports both ISO and Video_TS there is really no advantage to either one.
ISO file is a container file system. its a virtual disc image. when burning the data there is no difference. as the software will convert the video_ts in ISO9660 file system.[/QUOTE]
I usually use ImgBurn to rip the DVD to an ISO file using AnyDVD in the background. That way I can burn a DVD-9 or DVD-5 from the ISO at a later time using ImgBurn and this method yields an exact clone of the original. In fact, ImgBurn permits me to produce DL DVDs with seemless layer breaks. That it a big plus since I hate those annoying slight pauses which sometimes are in awkward places.
Using CloneCD with AnyDVD in the background is the next best method but the original layer pause (if any) remains.