Which tunings do you use for Bach?

Hey, so I know Pianoteq has well temperament presets but which one sounds best for Bach? After all, it is the *well* tempered clavier. But also, wouldn’t Bach use different temperaments from piece to piece? And if so, has anyone experimented with doing unique well temperaments for the harpsichord with pianoteq?

Btw, I think the Pianoteq harpsichord is one of the best sounding VSTs ever. But I think the quality gets worse with tunings away from default though. Anything I can do about that?