I actually heard the Manfred a few weeks ago by the New York Phil. here in NYC. The audience went wild thinking they had heard a great performance but I felt it dragged in spots and the slow movement seemed endless although it was exciting in spots. It certainly was great to hear it live. The conductor was S, Bychkov. It received a poor review from the NY Times critic who complained about sloppy playing and timing problems. I own the Muti and Plentev (?) versions. I am still looking for a better recording and understanding version of this great but sprawling work.