I definately agree with Peter McCall - if it aint broke, dont try to fix it.
Besides - its only roumors that dvd2one should have some pulsating effect. Theres no bug or anything in dvd2one creating this pulsating - its simply a matter of poor quality in original material, that naturally becomes more visible when being compressed further. Nothing more.
So unless you try to backup some of the dvd's where the original allready have some pulsating due to lowquality encoders used, you will not experience it in any dvd2one backups.