Of my 20 or so rips, they’re

Of my 20 or so rips, they’re averaging about 16GB in size, with some around 10GB and others close to 30GB.  All of my rips are in MKV format with just the movie, subtitles, and the HD audio (no core–aka non-HD–audio) track.  The tool I use for this is Another EAC3to GUI Plus and, while it’s the easiest I’ve found, making MKVs is still somewhat difficult for Blu-rays.  However, this is the best way I’ve found to make the smallest files.

In my opinion, the EASIEST method for ripping Blu-rays is to use the BDMV folder structure, though.  I’m pretty sure that leaves everything in it, though, resulting in the largest amount of storage.