Just to clarify things.
Mac The Ripper is just what it says it is. It is a software that removes copy protection from dvds. Thats is its main purpose. To get the latests version 3.0 14m it requires paying for it, contrary to popular believe it is not freeware. It is shareware. The free version does not remove ripgaurd, or arcos encryptions.
Handbrake is a software for compressing dvd mpeg2 files (vob files) from dvds into h.264 very high quality video and also does 2 pass h.264 encoding as well. High definition in my case as I use Handbrake all the time. It also passes thru ac3 and rencodes audio into dolby prologic II or stereo. It does have some limited and I mean very limited ripping capability thru its use of vlc players decrypting, (you must have vlc player installed to have that ability) Handbrake does not decrypt on its own.
Handbrake is open source and a very superior piece of software and it is excellent for novices and advanced users. It is multi processor aware and takes full advantage of them when compressing h.264. I use a quad core mac pro 3.0 ghz and the encodes for 3500 kbps for me run right around 120 frames per second. So for a 2 hour movie it takes about 1 hour and 30 min. So if you have a dual core or a quad the speeds are very quick for high bit rate encoding. Even better for 8 core. Most encodes run the processors on my quad core at about 85 to 90% all four of them.
Handbrake is available here http://handbrake.fr/
Instructions how to get the latest MTR are available here http://www.ripdifferent.com/forum/
P.S. You have to register with the mtr forum to gain access to the ability to get 3.14m. It also does css decryption, and repairs bad sectors along with arcos and rippguard decryption.
I hope this clarifies what they are and what they both do.