I've just finished listening to "Winterreise" on this recording and the thing I'm left with is a sense of just how close a musical partnership there was between DFD and Gerald Moore. They play as one, hand in glove and know where they are going with the music. This left me confident that I was in good hands, of "masters" as the previous reviewer states. The way certain songs were done left me particularly impressed through the characterisation that the artists gave to their interpretation ("Auf dem Flusse" and "Die Post" for example). I also found the last song very touching by the simplicity with which the pathos of the words were sung. It is not as dramatically sung as the recent Werner Gura/Christoph Berner recording which recently I have found even more engaging, but is still superb.
I personally would not be concerned about the quality of the recording here. It is not digital but is good analogue sound.
It is almost worth the asking price for this "Winterreise" alone so with the other two discs as well this is a snip.