First, this book is a pleasure to browse. It has nice colors, good type, and great schematics. There are truly 150 borders, and if you see one on the cover you like, it will be in the book (I checked four of my favorites, and they were all there). Unfortunately, the border you like may not be easy to find. This book would have been improved with a picture index of the borders available collected on a few pages at the beginning OR a numerical index of which borders are found where on the covers (as some doily books are known to do). Before you buy, you should note that the book is oddly dimensioned. The picture Amazon shows is the entire cover...not the top half of a full-sized cover, which makes the number of pages in the book twice what an ordinary sized pattern book would have with the same number of patterns. The book itself might also have benefited from a spiral rather than a standard paperback-type binding.
Next, the borders are different from what I have seen in other books. I have at least 10 border and edging books, and the ones here were different. These edgings used front and back loop construction to get ridges in creative locations. They had clusters, chains, lacy, and solid. There was a great deal of variability in style from border to border, yet virtually all were worthwhile. Even if I made an afghan a month, it would take more than 10 years to use all the designs I really liked. Most of the borders were not more than 4 rounds, though many had suggestions of how to make them wider. The colors were varied more than the author's previous motif book, and I thought they were prettier.
Then, there are a few things I would have changed. At least half of the borders have what I would call a "good" corner--a special treatment of the corner to make it stand out or a true right angle corner. The other half of the borders do say what to do at the corner, but the corner treatments are basically to work the border along the entire edge, add a few very boring stitches to keep the corner from cupping, and then start the next edge. (Basically, the corner would be "flat." Think of a 5dc, skip 2 stitches, sc in the center of a 3sc corner group, then continues with skip 2 stitches and 5dc group again.) Several of the borders with arches did this instead of having some "design" or short arch at the corner. (With the border described, I might put 9dc in the center of the 3sc group and have the skip 2 stitches before and after the border preceded by a sc, then 5dc). I would have added a few stitches to the pattern and created a true design for the corner...every time. Then, an option could have existed to have a pointed or flat corner depending on how many stitches were worked along the edge. Thankfully, with even 75 good corners, I am not likely to use up the design ideas any time soon.
Finally, I do highly recommend this book. Despite the suggestions for improvement given in this review, this set of patterns is one I can see using for years to come. The vast majority of the borders are lovely, well-written, and well-diagrammed. The charts are helpful for seeing structure, and they are given for both a corner and for a straight edge. The colors are pretty; the tips for working and introduction are well-done and helpful; and the overall presentation is top-notch. This book would be a great addition to any crochet border library.