The Choir of Kings College is one of the best in the world--so of course the recording will sound excellent. In fact, I own several recordings by Kings College and they perform their best on this one. The purity of the sound and superb diction are just unsurpassed. But the music is just not that good. It's often too harmonically strange, overdramatic, and, frankly, too modern.
That's not to say there is not good music--actually, some of the best pieces of music are on this recording. Highlights include: Chilcott's haunting "The Shepherd's Carol" (which is one of the only two melodic pieces on the entire recording), Part's energetic "Bogoroditse Dyevo", Dove's dramatic "The Three Kings", Rutter's typical, but comparatively good "What sweeter music" (the other melodic piece), Weir's majestic "Illumniare Jerusalem" and Woolrich's sublime "Spring in Winter". There are a few honorable mentions--Berkeley's "In Wintertime" & Goehr's "Carol for St. Stephen"--but the other half of the recording is pretty much awful. The choir & Stephen Cleobury sound good trying--but the composers haven't given them much of value to work with.
An interesting addition to a music lover's collection, but I can't imagine it being enjoyable to someone looking for Christmas carols.