After a month's use, I am very content with this DVD ripper. It could nearly solve all my concerns regarding ripping DVD. And it is very fast with good video quality. I give it a five-star mark.
Just downloaded and installed faultlessly on my 13'' rMBP (OSX 10.10.3), opens up to a very decent UI. I tested with my dvd movie - rip Wreck-It Ralph to mkv, the wizard is intuitive and the ripping speed I have to say, deadly fast! The output video file is close to pristine. Couldn't more pleased with such a free dvd ripper for mac, cheers.