I can only concur with what rjmcr said above. Sonically and performance-wise this box is a great achievement, and on that I will always find myself going back to.
I only have one point of critique, which is the very low-budget packaging the set comes in. The box itself is fine, but the discs are contained in thin paper sleeves with plastic windows (exactly like the ones you sometimes find the software disc of something you have just bought, but open in one end). It does mean that the set takes up less shelf space, but it could have been done better (with this 11-CD set I received another 10-CD set, which was almost 50 % wider).
But all in all, amazing set. Do get it!