I ran a a jazz section of a hi fi (mid fi and high end) and when folks remarked that CD's didn't sound as good as LP's I'd generally agree.CD's got better in late 90's with 20 bit recordings (listen to early Prestige vs the latter issues or there Creedence Clearwater CD's).but I would say one label had a good sound but a bit brittle that being Mappleshade.Pierre made his own cables of course,took modified Senhessier mikes and went straight to tap no mixing board,no e.q.,filtering etc.Because of this he went back to old school use of distance rings since musicians needed to be right distance from mikes since gain could not be added.
Results were good but mixed.Larry Willis the fine post bop pianist was there A/R man.As has been mentioned the recordings were clear and superior to what was out there when it label started if a bit "brittle" but it was stable of artists that limited them.I think like others that the Clifford Jordan "Live At Ethell's" is a masterpiece (his "Lush Life" is one for ages) and matches his uniformly strong output say on Criss Cross but you can hear his breath ,fingers on the sax,and the room.
But IMHO I would say the best label out there is your a jazz fan is the Venus label in Japan.There re-issues of Interplay are superb and the recordings they did for CD and LP are superb and the roster is amazing.I especially liked the 4 CD's/LP's made by Archie Shepp with John Hicks,George Mraz,and Idris Muhammad are incredible.They also proved to me you don't need analogue tape to make a great LP.They were pressed beautifully and have less dynamic range than the CD's are more "tactile".But the CD's are among the best I own and the stable they have from the recently departed Eddie Higgins to excellent singers or horn players makes them the label to always check to see if it is jazz you like.You know the sonics will be the best.Whether the new HD formats like Linn selling 24/192 streaming audio or the potential of Blu-Ray betters the Venus Cd's we'll see but I am sure they will keep up.Wish Mappleshade could have done as good a job (to get back to your inquiry) but they suffer from roster and perhaps some production issues in comparison and others have caught up in quality from point that Mappleshade started.Maybe Pierre will catch up.
Chazz