My review will not be as scholarly as Altoman's excellent review in which he gave it four stars. I bought this probably 15 or so years ago, wasn't really into masses, but liked Mozart generally, liked Sir Neville Marriner and Cotrubas and so bought it. Probably listened to it three or four times until recently. Now retired for awhile, more time to listen and have been more into masses. Better prepared, I love this double CD. Clearly top quality all the way through! I have to admit that I can't get into the Requiem, but that is because it is a requiem and I'm one of those people who gets upset when his favorite sopranos (as they persist in doing) have affairs with tenors, suffer and die. Not many people who buy this two CD set will be at all disappointed. Maybe if I had Altoman's education I would only give it four stars, but I really like this collection.