For me, in order, they are:
Prum
Zilliken
Selbach
von Schubert
Schloss Lieser
Haart
Schafer-Frolich
Then a big drop-off
you’ll laugh, I’m sure:
Hans Kramp
Fürst Löwenstein
Schloss Vollrads
Weingut Keller
(a bunch of old stuff, obviously)
Donnhoff
Selbach-Oster
J. J. Prum
Maximin Grunhaus
Leitz
Donnhoff
Donnhoff
Donnhoff
Then…
F Haag
Dr Loosen
W Schaeffer
Keller
Schaefer-Froelich
Heymann-Loewenstein
Muller-Catoir
J Leitz
///Martin
Not necessarily in rank order but close:
Keller
Prum
Muller
Donnhof
Lauer
JJ Prum
Egon Muller
Peter Lauer
Holger Koch
Donnhoff
THIS!
David do S.O make anything like the Prum WS Spatlese/Kabinetts, or GH Spatlese/Kabinetts?
similar price range (25-35/btl)?
And what’s a good place to get some 2012s of the SO?
Thank you sir!
The Selbach style is very different from Prum, but they make plenty of Kabinett and Spätlese. I am particularly fond of their wines from the Zeltinger Schlossberg, though everything they make is very, very good. The single parcel wines named Anrecht, Schmitt and Rotlay are amazing and always worth buying. As for where…I would just check WineSearcher. Selbach wines tend to have good availability.
Leitz.
JJ Christoffel.
Hexamer.
Kruger-Rumpf
Karl Erbes.
****one should remember where I live!
Donnhoff
Karthauserhof
F Haag
Egon Muller
Emrich Schonleber
Christoffel
Keller
Weil
Seeing the list reminds me that I need to rebalance toward Prum, willi Schaefer etc. would love to have AJ Adam in my top group but prices have run away from me.
Maximim Grünhaüser
J.J. Prüm
Dönnhoff
J.J. Christoffel
Donnhoff
JJ Prum
Muller-Catoir
Koehler-Rupprecht
JJ Christoffel
Willi Schaefer
Merkelbach
Yes, had some topic these and really top wines. Sadly SO is not available in NZ but have had the Anrecht and the Rotlay in the USA, I preferred the Anrecht but both were awesome wines. Well worth finding. I think they are small production wines.
brodie
Small, but not microscopically small.
Donnhoff
J J Prum
Willi Schaefer
J J Christoffel
Selbach-Oster
Schaefer-Froelich
Schloss Lieser
Selbach-Oster
Willi Schaefer
Keller
Rebholz
Unfortunately my Karthauserhofs have been mostly depleted. 
Dönnhoff 82.5%
Joh. Jos. Christoffel Erben 5.3%
Willi Schaefer 4.2%
Müller-Catoir 3.9%
Fritz Haag 2.2%
Joh. Jos. Prüm 1.5%
Kerpen 0.2%
Von Schubert 0.2%
Dönnhoff
JJ Prum
AJ Adam
Willi Schaefer