My experience with jazz LPs is this: with combos 6-7 instruments or less, early mono issues are usually the best-sounding, followed by initial stereo LP issue, and, finally, everything issued thereafter. Occasionally, CD reissues are very good. I have a 1990 Chess LP release in stereo of "A Night At The Vanguard" that is excellent. I've never heard an early mono, but if the tendency described above follows, you likely have the version to own. Good listening!
