Hi, Shelby! Thanks for your kind words.
I use RipIt to convert my DVDs of old TV shows (McMillan & Wife, Murphy Brown) to .mp4 files using the Handbrake nightly build, which I've found are mature enough to be trusted, unlike some program nightly builds.
For Plex, which I'm running on a 2.26GB Mac Mini in my A/V cabinet, I use the Normal setting which I've found is good enough. I have yet to convert any Blu-ray's to digital format as I only have a couple of Blu-ray movies. So, I can't help you there. (See the Handbrake forum for more info. BTW, Handbrake can rip, but that's not it's intended use. Plan to use other programs to do the ripping.)
For my modified 1st gen Apple TVs (ATV1s), I use
dynaflash's recommended settings as posted on his web site on Jul 6, 2010. (He's one of the developers of Handbrake.)
mixed-refs=1:b-adapt=2:b-pyramid=none:trellis=0:weightp=0:vbv-maxrate=5500:vbv-bufsize=5500
The ATV1s have been modified to use an eSATA drive and run XBMC and Boxee using
atvusb-creator.
I'm in the process of planning to phasing out my ATV1s as they are no longer supported by Apple, and I don't know how much longer the user community can mod the ATV1's s/w before they'll move on to other projects. So, the ATV1s and Mini HTPC are today's answer to my entrainment needs. However, as I mentioned above, I got in to the Hackintosh game from Cave Man's recommendation. (Cave Man lurks on the Plex and Handbrake forums.) So, my current Hackintosh is eventually going into a HTPC case.