Answers to Paul's little quiz...
BH-sample - AKG C426 stereo microphone in MS configuration (cardioid M)
Direct to DAT - Cool Edit 96
MF-sample - AKG C414 microphones in crossed figures of eight ("Blumlein")
Direct to DAT - Cool Edit 2000
JC-sample - Neumann KM140 microphones in ORTF configuration
Direct to computer (CardDeluxe, 24 bits) - Cool Edit 2000
The hall is St George's, Brandon Hill, Bristol, and the piano (inevitably) is a Steinway.
BH-sample was recorded before the hall's acoustics were changed, and the other two after.
The changes made the hall much more reverberant, and removed some flutter-echo problems.