I like the groups on Debut in Blues and Breakthrough. They seem like actual working groups with otherwise little recorded or even unrecorded musicians; they are perfectly fine. As for Carnival Sketches, I mostly like the first side--the suite by Richard Evans; the trumpet playing on this side is fantastic.
I've found those old black/yellow Prestiges to be similar to original Blue Notes in that they may still sound alot better than they look, at least absent feelable scratches.
There's also a Fantasy reissue of My Favorite Quintet on a single LP.
Here's one on ebay:
http://www.ebay.com/itm/CHARLES-MINGUS-My-Favorite-Quintet-LP-JWS-5-fantasy-Records-/230759214639?pt=Music_on_Vinyl&hash=item35ba522e2f#ht_324wt_117
That's terrible news.
I heard him live about a year and a half ago at Jazz Standard in an Alvin Queen led group--he still sounded great.
And back around 1985 or so he played at the Caravan of Dreams in Fort Worth with David Newman (plus guitar and drums) for a weekend engagement. I was there two nights in a row. Probably the most inspired I ever heard David Newman play, that group was really good.
Violins No End (With Stuff Smith) http://www.amazon.com/Violins-No-End-Stephane-Grappelli/dp/B000000Z2B/ref=sr_1_1?s=music&ie=UTF8&qid=1331299972&sr=1-1
I can't locate the CD to listen myself, but I guess my ears aren't what they used to be, and/or computer speakers are a poor substitute for a real stereo.