Excellent, thanks very much. I've just been testing my Blanchet sfz with some ValhallaRoom and I think it sounds very nice. I suspect it will enter the regular rotation of harpsichord VSTi that I play and record.
Even in 2023 there are very few virtual harpsichords suitable for solo recording including ones that are commercial. The best I've found are the Mietke and Ruckers from Sonus Paradisi for the authentic resonance when you lift fingers from keys (I have custom grandorgue versions of both if anyone wants the .organ files to place with their samples). Then there's the Spitfire instrument which the producers made an absolute mess of in terms of crossfading various parts of the round robin (listen to the demos to see what I mean) but I've salvaged with some custom audio editing and turning it into an SFZ. It's probably my favorite instrument for both tone and authentic resonance but, alas, because of the audio editing it is impossible to share. I find the Berlin harpsichords too hollywood-y for my tastes which is a shame because they also capture the instrument resonance really well.
I think the free Zell instrument (https://www.atmos.cat/perl?num=1404987512) is also quite nice but has a limited compass for Bach beyond the WTC.
P.S. Let me know if there are any of the other free harpsichords that you'd like turning into SFZ…