I was really looking forward to an exceptional 2 CD set after reading the reviews here. I was rather disappointed.
I am not an organ scholar nor a classical music critic, so my views are as a lay person with a general interest in many genres of classical music, a lot of listening experience (live and otherwise), and two better-than-average domestic stereo systems.
I was interested to hear distinct tonal differences between the organs played, but for the most part these 1970s analogue Decca recordings do not do justice to the longest stops: all but three pieces have not much hint of anything deeper than a 16ft stop. The mid and treble ranges are clear and forward, but what other reviewers seem to regard as a "room shaking" bass register is probably well above the pitch which I presume these organs actually produce when called upon to do so.
I will not rehash the opinions of others here about the selection of music, or its interpretation, which seems to have managed to achieve something approaching a consensus. My contribution may therefore seem a little one-dimensional, but I felt the shortcomings in this respect needed airing.