Great question. I didn't see my favorite among the answers and it's a super pick. Karl Ristenpart with the Orchestre de Chambre de la Sarre. It comes in a 6 CD box set that ALSO includes:The art of the Fugue, Suites for Orchestra, Triple Concerto for Flute, Violin and Harpsichord, and Concerto for Multiple Harpsichords.
The performances are just wonderful. They were recorded in 1960 and 1965 and remastered in 2000. The sound is absolutely lovely with the players performing in an older more Central European style than the Pinnock, Marriner and Hogwood versions which I also own and enjoy. I picked it up New recently on the Internet for about $45 with shipping. You won't go wrong and, you'll pick up some spirited performances of other Bach compositions that will get your feet tapping like a metronome on fire.
Highly recommended set.......... ISBN: 028946589328
REL2