My order from JPC arrived this morning, including the Vernet integral.
Which is really "Complete Organ Works Plus More", with guest appearances by Marie-Claire Alain and a few others
CDs 1-15 The Works for Organ arranged sort of chronologically, so chorales and fugues and sonatas and concertos are all mixed in together--a different arrangement from the Alain and Preston sets I already have, where everything is arranged by category. We'll see how I like this arrangement.
CD 16 "Clavier Ubung 0" "An Album for the Young"--a compilation of pieces probably not by Bach, but by his pupils, or by colleagues or earlier musicians but used by Bach for teaching purposes. Mostly preludes and fugues, etc. ending with the Little Harmonic Labyrinth.
CD 17 The Concertos for 2, 3 and 4 Keyboard Instruments (BWV 1060 etc), with the solo parts played on positive organs, with Alain and others sharing the solo duties with Vernet, and the Collegium Baroque doing the orchestral duties. Period instruments, done on the premise that if works Bach wrote for the harpsichord can be played on the piano, then why not the organ (and a further argument to back up the idea that in fact they were sometimes played on organ in Bach's day.)
CD 18 Vernet's first CD, a recital of Bach pieces dating from 1988
CD 19 a collection of works by Bach and transcriptions of Bach works taken (I'm slightly guessing here) from other Vernet recordings of various dates.
Fuller liner notes than with the Preston and Alain sets, and a rather ample description of the organs used in the recording of the integral.