What genre tends to be recorded in the most satisfying fashion?

Clint Mansell and Kronos Quartet

Do you mean "sounds better than other genres when in recorded form"? or "has had the most care expended on the recording process"?  If it's the first, I've always thought (with no evidence, of course), that part of the "early music" or "original music" or "historically-informed performance" trend in the 80s and 90s was supported in large part because that sound was ... let's call it 'most striking' in early digital recordings.  The early cd's of these groups sounded worlds better than many of the routine muddy and careless vinyl recordings they replaced.

Some of the early jazz records are amazing. Check out the Contemporary label for stereo and some of the Savoy recordings for mono.

Yes, I mean "has had the most care expended on the recording process", and therefore more fully demonstrates what our systems are capable of. I mean the latter in a holistic sense--as a total musical experience. I find I sometimes appreciate the literal sound/recording itself sometimes as much as the music it's transmitting. The first time I heard a really good system, I cried, and I didn't even care for the track.
I'm interested in this because I've noticed that the "quality" of a recording does seem to be somewhat dependent on its genre. For example, rockabilly tracks are usually recorded to mimic the lo-fi of their era, while classical and modern jazz strive to be as accurate as they can manage. I wish blues was better reproduced, although Jimmi Vaughn's team do a great job. I could go on.

Take a look at whatever audition playlists you've made for new speakers, or to show off new equipment to a wife who doubts your expenditure was worth it. My lists are disproportionate in certain genres.