I'll put in a plug for Christopher Herrick's Bach organ works cycle on Hyperion, well-recorded for the most part and well registered and played. I had the pleasure of meeting Christopher (he stayed at my home for a few days during an AGO workshop and concert at my church a few years ago), and found him to be a lot of fun but also a very serious musician, particularly with respect to his interpretations of Bach. The next summer I got to hear him play a number of concerts when he played all of the Bach organ works over a two-plus week period at Lincoln Center, quite a feat. Aside from his ability to master the technical demands of Bach's music, I find his taste in registrations to be excellent. As a good example of his playing, I'd recommend his Hyperion recording of the Bach Trio Sonatas, a reverberant and perhaps slightly bright recording which conveys the beauty and intricacy of those pieces, one of my favorite Bach organ discs.