While the Murray recording is good, I still am lukewarm about his performances, though there's never a technical mistake. I prefer Christopher Herrick on the Hyperion label, probably influenced in part by the fact I've gotten to know him and am impressed both by his scholarly approach to Bach as well as his playing. The Guillou is also a good version, has a lot more fire than Murray's. And if you want something completely different and don't mind some liberties taken in registration and a very dry organ sound, Virgil Fox's recording, both the direct to disc vinyl and the CD version, is an exciting, though admittedly eccentric, version.
