Quills or hammers?

Here are two recordings of the Prelude and Fugue in C minor from Book One of The Well-Tempered Clavier: on harpsichord, played by Malcolm Hamilton; and, on piano, played by Takahiro Sonoda. Which do you prefer?

Harpsichord:
[mp3]http://tancos.net/audio/MH-Prelude 2 in C Minor.mp3[/mp3]
[mp3]http://tancos.net/audio/MH-Fugue 2 in C Minor.mp3[/mp3]

Piano:
[mp3]http://tancos.net/audio/TS-Prelude 2 in C Minor.mp3[/mp3]
[mp3]http://tancos.net/audio/TS-Fugue 2 in C Minor.mp3[/mp3]