okay, barrons is way too small and incomplete to prepare you for the mcat.
***but*** Barron's has a LOT of detail in the BS section that the other books don't have.
that said, there is only 5 or 6 pages on OCHEM! and the stuff on physics and chemistry is also insufficient.
ALSO, the VR problems in Barron's are VERY easy and I got every question right in more than half of the passages.
so, if you want to use Barron's for Biological Sciences, fine, but the preparation for PS, VR, and OCHEM is incomplete.