well, free ripping software, I think handbrake really not bad, but now I prefer iFunia dvd to ipad converter, it's a profesional ipad ripping tool. I ran across the recommendation on applethoughts.com:
Apple Thoughts: iFunia, A Video Converter for all Your Apple Products
I got it and tried, the speed and quality are great, of course can do some improve on friendly interface, but in short, it's works nice for my iPad.