I have found the exact opposite of qac DO, and I have worked with materials from both companies. As I've mentioned in the past, I have been a Hyperlearning teacher and a BR tutor.
The BR Gen Chem, Physics, and Orgo books are the best out there when you consider text AND passages. PR text materials are very good, but many of their passages are too math-heavy and don't reflect the MCAT (IMO). PR verbal passages seem pretty strong though.
As for being too detailed, BR exams have passages on an EKG, the lac operon, and atypical nuclear emissions. These are the exact things that people here on SDN complained about not being prepared for right after the August MCAT. I will agree that BR materials address more topics than PR materials, but "too detailed" does not describe them. I think "thorough" describes books that cover every possible topic that could show up.
Personally, I'd rather have exams and prep books that expose me to everything, challenge me to think, and present well-thought, thorough answer explanations than books that present a whole bunch of equations and definitions I already know. It's a preference issue I guess, and I just happen to prefer being challenged.
Both companies put out solid materials that do a good job in preparing students. If you want to practice on the fundamentals, PR will get you there. If you feel you know fundamentals well, and you want to be challenged and exposed to many concepts, BR is the way to go. It's all up to you.