I know this set has taken hits for sound in other threads but I think it is a "more than reasonable" representation of the recordings. I've had a few of them on 78 and the rest on lps since the late '50s.
My big complaint is Keepnews' deviation from chronology so he can lead off the set with "highlights". What a bozo.
Some of the later cuts are "fluff" but that is Diz with wonders and warts.
The earlier stuff is essential as is the best of the live material.
Not noted generally for the sound (but much of it is fine), the complete and ongoing nature of the label is the main attraction.
In spite of tons of opinions to the contrary, I prefer their Armstrong Hot 5s and 7s to JSP and Columbia/Sony.
A short rational (I hope) reason for short cds is they reflect lps recorded in a day when union rules dictated everything. Union contracts were written to reflect 3 hour sessions producing 15 minutes of material for issue. Any music (or session) longer required "over time" payments. During those days I always negotiated a deal for 3 sessions (9 hours in the studio) for 45 minutes of music whether that was the result or not.
As a jazz and classical collector since the late '50s, and since I have made lps since the mid '60s, if this guy can really hear the dif, I wanna talk to that boy.
On second thought, I never want to talk to him.
Let me state this as clearly as possible: After 40 years in this business, I do not believe what they say about keeping the catalog available. We may be offered "downloads" of current items but it ain't the same.
They might believe it but it ain't gonna happen. Saul Zaentz and his people (especially Ralph Kaffel) have done jazz fans a service for many years and it can not continue without Saul's money and Ralph's zeal.
Thanks to all a Fantasy.
Edited to add: If you have some favorite Concords, look at the current Concord catalog to see what these folks do.