Pros of TBR PS:
-quick use formulas they made up that make MCAT math ridiculously fast
-great refresher style explanations of many topics
-unique ways of seeing problems that clarify obscure topics quickly
-very well thought out practice passages
-very organized chapters that help you focus and study well
Cons of TBR PS
-many typos(rarely are these typos bad enough that you get false information though, but make sure the answer for each question makes sense because there are some mistakes in the answers the writers choose)
-practice passages are sort of in MCAT format, but often you will have a passage on one side of a page and the questions on the other so you can't see the passage while you answer the questions
Neither a pro nor a con
-goes beyond what is needed sometimes(not nearly as much as their BS books though). This is nice for background information, but if you don't check what they offer against topic lists, you may find yourself burning lots of study time on complicated things that you don't actually need to know.
Overall, I think TBR PS+EK 1001+KhanAcademy+Brightstorm
http://www.youtube.com/user/brightstorm2/videos
is an unbeatable combination for PS success.