I only have the AP Physics one, but it tells you everything you need to know, and absolutely nothing more. It's a superficial understanding of the topic, but enough to get you a 5.
If you like the style of Barron's, which is regularly harder than the real thing, changing to something like this might be a shock. My Barron's AP book is twice as thick as the 5 Steps to a 5 one.
Also, there's a nice 'advice' section in the start. Depending on how much you've prepared, it might be just fluff, or it might be a godsend.