I agree that Furtwangler's performances cannot be beat. The recordings from during the war on Music and Arts and the Tahra recordings are not the best. The EMI from 53 isn't too bad. As to other recordings, Gunter Wand's sounds decent as does Harnoncourt's but I don't know that these are avaiable except in box sets. Bohm's is also not bad. Vanska's probably has the cleanest sound.
