I agree with my ol friend Russo.....Biochem in the kaplan series was AWESOME! Dr. Hansen (the author) is wonderful, she was actually the person that taught us during the course. In terms of the path book, its great too, however, only after you've made annotations to it from the actual kaplan prof (we had dr. barone...find out where he's teaching and attend the class!). Dr. Barone actually helped write the path book and he fills in the many 'holes' in the path book.
HOnestly though i think it's a tie b/w the kaplan physio book and the kaplan biochem. seriously, if u do the kaplan physio book in its entirety i think u will be very well prepared for ur classes and the boards.
just my thoughts