R35:
There is really no one size fit all. However, the Berkeley Review seems to have done an excellent job on both Chemistry subject. Nonetheless, if you read the 509+ thread you will notice that many people did well with Kaplan, some with EK and others with TPR. Since, Kaplan and TPR are readily available at your local Barnes and Nobles, I suggest you swing by maybe this weekend and spend an hour or two with both company's book and see which feels right for your purpose.
Having said all of that I would really go with the Berkeley Review General and Organic Chemistry. For one, they both contain a "ton" of practice problems with excellent explanations, which may be far more valuable than just content review. So spend a few hours at your local Barnes and Noble (good public or private library), go through Kaplan and the Princeton Review, see if you like either best. But at the end of the day I highly recommend Berkeley Review for both Chemistry. Best of luck.
P.S.
Biochemistry seems to be an area that Kaplan have done a fairly decent job with their book. However, be sure to supplement with a lot of practice questions and passage (Khan Academy has some free passages.)