I am looking for the best combination of performance and recording fidelity. I need a box set or the equivalent of all of Beethoven's piano sonatas. I currently own the EMI Classics set performed by Daniel Barenboim and I am less than completely enthused by it. Anyone have any recommendations for a great performance that is recorded beautifully? I'd like as little tape hiss as possible and fidelity to be great. However, I'll take less fidelity over a flat and lifeless performance. Thanks all!