I have:
The Cotton club set
Bill Monroe - Early days set, with the duos, proto bluegrass and first Flatt & Scruggs stuff. I once owned, in another life, ths second '50s set, which I will rebuy sometime. Incredible!
I have recently ordered the Cliff Bruner set. Can't wait to get among all that Bob Dunn and Moon Mullican.
Next up - in a return to my pre-jazz fandom of western swing - will be the Wills set, after some SERIOUS saving. That, the Bruner and the recently purchased five-disc set of the complete Milton Brown on Texas Rose should see me right for a while.
In this regard at least, and other issues aside, Proper is a poor substitute. The Texas Rose/Brown set (available through Origin jazz Library) is a lot pricier, but the sound is incredible and it was released with the co-operation of Milton's brother.
I've also ordered the Brown biography from the University of Illinois and already have the Townshend Wills bio.
Itr's interesting. In times past I would have taken a much more scattered approach to this music, but here I am snagging multi-disc sets by the three main players; compilations, obscurities and cheapies be damned. Feels right.