As mentioned earlier my first choice would be Blu-ray by a slim margin over SACD, but I'm starting to shift more towards SACD. Recently I was horrified to find out that the Blu-ray audio release of "Fresh Cream" is brick wall limited. What were they thinking! I have yet to encounter any SACD that has been brick-walled, but that doesn't mean that they don't exist. Garbage in garbage out regardless of format!
With regards to ripping obviously regular CD's come first. SACD's come second IMHO. Once set up it is an easy one step process to rip SACD to .dsf (or .iso). Only one more very easy step if you need flac. On the other hand Blu-ray ripping is a two step process, unless someone can point out an easier way. You first rip (decrypt) to .mkv with MakeMKV then you use AudioMuxer to extract the audio from the correct mpls file. Having said that the two step process is not that difficult either. I just ripped Chicago V from the Quadio set! Nice to see that the rip has no needless center or Lfe channel!
The last step is to tag the files, I use Mp3tag. I just found out a very useful feature, first find your release (or one with the same track list) in Discogs, then input the Discogs number into mp3tag and all the track information and cover art will be there. I just wish that I knew about that before as it can be used to instantly tag vinyl rips as well! You can search Discogs from the program itself but that doesn't work nearly as well as searching Discogs yourself first, then inputting the release number.