Can anyone suggest a free DVD ripper program that produces a good quality movie?

If illegal method, mods will go after you.

Imtoo DVD ripper but must pay 1

I mean any good ones that give free trials?

try this
http://www.any-video-converter.com/products/for_video_free/
i'm using that and quality is okay

dvd decrypter is always recommended although new released has been stopped

i also using any-video-converter, the output quality is good but just have same bug. convert too many files in one time may cause the files not playable at dvd mp4 player. for good quality u need to close the application retart it again for convert second file.