If Gramavision is a major label, I'd throw Anthony Davis into the ring as well. He also recorded his opera of Malcolm X for Koch... bigger indie I guess, rather than a major.
I super dig those early LPs from Minnesota.
I only know the Hat with McPhee. Which other ones would you suggest checking out?
Blue Freedom's New Art Transformation and Improvisations/Being Free are also good, albeit hard to find LPs.
Yes, that would be the original of I'm All Smiles. It's ok, band and material looks like it would be cooler than it is. I prefer Spanish Steps (Woode and Taylor) and would like to hear Hamp's Piano on Saba/MPS (Weber, Weiss).
In terms of vintage recordings, chewy might be right - people I know who own record stores sell far, far more jazz on LP than they ever have on CD. It's like night and day. Used LPs wouldn't factor into such ratings but new reissues might - I'm not sure if all formats are tracked equally.
Now:
Gruppo di Improvisazione Nuova Consonanza - Improvisazione - (DGG, Ger, out of the Avant-garde Vol. 2 box)
been a while since I spun this. Better than I remember.