I subscribed to this series last year and now have about ten volumes. The first Genesis volume arrived just in time as I started preaching a series through Genesis this past Advent. This first Genesis volume has been immensely helpful in preparation for preaching on the Creation and Primeval History of the first 11 chapters. I'd give this series a "5,"but the big problem is that the editors pick and choose from the Fathers in such a way as often to find their own contemporary theology in the Fathers. I don't know that we could expect otherwise, but be aware that the excerpt selection for each volume often give the impression of a patristic consensus that never actually existed or that was not as monolithic as these commentaries might suggest. I've also found it helpful to use this in conjunction with Schaff's 38-volume "Church Fathers." If you've got that, you can reference the excerpts in the commentary volumes in their contexts -- at least those that Schaff's series includes. You won't be able to do this all the time, but often enough to be worthwhile.