Quick Hits: Good book, but has a lot of fluff
Overall, this is a good accessory. Its greatest quality is the amount of variant rides and such it offers, which is what I wanted out of the book. Readers will be happy with the ways you can customize your rigger; however, the volume of add-ons is more like a chapter or two in the core rulebook as much of the book is dedicated to "establishing the mindset" of a rigger.
That's my main criticism: it has a lot of fiction; “reviews” of the items from “real-life” shadowrunners; etc. Unfortunately, there was probably too much of it – at least half of the text was a setting piece, so it's not much of a real “rules crunch” supplement. I think readers would have been better served with a smaller book with less fluff (and a lower price).
Also, as others point out a lot in these Catalyst books, the editing could have been better, but it did not detract from the overall readability of the book.
[4 of 5 Stars!]