Any of the above recommendations above will give you top quality, however it's time to start a thread to answer one simple question. Which DVD encoder produces the best picture quality. There are some who insist that Procoder is the best and perhaps most say that CCE is the best, but a growing number of people are moving toward HC Encoder which by the way is completely free. So isn't it time that a group gathered to work together to at least try and dispel what is truth and what is just fan-boy support? Sorry back on topic. DVD-Rebuilder regardless of encoder choice is only in competition with itself and the encoders used.
HC Encoder has always worked well for me both on Windows and Linux with Wine. And it's hard to beat the price or quality... Hank has done an excellent job on his encoder.