Like others, Mravinsky's performance is the one I go back to most often. I was a bit surprised at the comments about poor recording quality, but I've never heard their digital transfers. I have the original 1960's individual lp releases of 4,5,& 6 and the 1974 box set of 3 lps. The individual original releases of each symphony are some of the best DG recordings from that era IMO. The boxed set's lp's are not quite as good, but still quite decent. They aren't audio show dogs though.