FEDESARTORIO  D-Vision is my favorite movie converter out there. I almost exclusively encode in H264 nowadays; d-vision is a tad slower than Handbrake on this front, but the quality is much better. I encoded the same movie at the same bitrate with the two programs just to test them and the overall quality in D-Vision is noticeably better. Especially in the gradients which are a lot smoother at the default settings.

Everything else also works great in D-Vision: effective and straightfoward.

The only thing missing in my opinion is a small integrated tool to join/split H264 movies, that would be great.  
(Version 3.2.2)

FEDESARTORIO  Handbrake is a terrific little app. I used the previous version to rip all my dvds and it has never failed me. Very good picture quality and very stable. My only complaint was the slowness of the h264 encoding.

I just got the new version and it looks vastly improved, with far more options and apparently faster encoding. The problem is it crashes sometimes, mainly when changing the resolution or deinterlacing settings in the image screen. Too bad! Let's hope this gets fixed in 0.9.1

Still, keep up the great work developers because this app is very nice and useful  
(Version 0.9)