If this includes mono CDs as well, I would quote the following:
G. F. Handel, Concerti Grossi Op. 6, Nos. 5-8,
English Baroque Orchestra conducted by Herman Scherchen
Millenium Classics MCAD 80123
This recording from 1954 (part of a three separate disc release
of the complete Op. 6) contains the best sounding recording
of Cto. No. 5 that I know of. It was released on the super budget
Millenium Classics series in 1996-1997, and I believe it is now
out of print.