I would say Land is best. I have a nice limited edition that she signed for me while was at a workshop in England back in 1992. Then Forbidden Land, The Edge of the Land are fairly good. I've not seen a copy of The Remains of Elmet, but understand that is good aswell. It has more Ted Hughes poems in it also. They all have their good points, and Fay was one of my favorite photographers. Her approach was so simple and she was very good at not getting hung up on the technical details, so that she could just concentrate on creating images. A truly wonderful lady, and a shame she's gone.