If you want the best quality video from a DVD I would recommend this workflow. Use DVD Decrypter to extract the VOB files from the DVD to your hard drive, then DVD2AVI to convert them to uncompressed AVIs plus a .wav of the DVD's audio file. This process will create a large number of very big AVI files. Then add these AVI files in sequence and the wav files to a Premiere Pro timeline to do any editing and then output to a DV AVI file from Premiere Pro. Then you can encode to any final format that you want in a full featured video encoding app like Cleaner XL 1.5 which can add your watermarks if necessary and make the WMVs, Quicktime, MPEG, Flash, Real or whatever other formats that you need at any frame size or bitrate. I have achieve great quality results this way.