Serkin enchanting

Magnificent box and dazzling interpretation and very "sensitive" Rudolf Serkin.
I already have several integral sonatas and piano concertos by Beethoven (CD and DVD), and sometimes up to 10 interpretations sonata (Brendel, Arrau, Pollini, Serkin, Gould, Richter, Nat, Barenboim, etc.) sometimes several interpretations of the same sonata by the same pianist.
Rudolf Serkin offers us - to my taste / tenderness - one of the finest interpretations of the last five sonatas especially (but not only).
From the perspective of the recording, mastering removed some breadth and depth to the sound of the piano (and low harmonics).
The ratio quality / price / pleasure is however exceptional.