I think my favorite jazz album has got to be Michael Garson's "Serendipity". It's Reference Recording RR-20. A really nice accoustic jazz album, with
high quality performances, and above average audio quality for the time it was produced.
Second choice would be Dave Gruisin's "Discovered Again.
Sheffield Treasury ST500. Great performances, and very nice recording by Sheffield Labs, too.
Hope these are still available! Hope this helps, and best of luck to you
in building out your jazz collection.