not to be rude, but there is a search function. this question gets asked like every three days. In short, EK series are stripped down with the basics you need to know. Get EK bio, it is by far the best for bio, all the responses on SDN say this. Know this book cold. Personally, you learn the best from passages, If you have time and the cash I highly suggest purchasing Berkeley Review Gen Chem and Ochem. There physics is great too. You will thank me later. You'll probably want EK biology review and EK 101 biology passages and EK verbal 101. PR is good, however, if you want to kill the MCAT you have to be able to integrate material. That's what BR does better than anyone else. Like, be able to answer questions if you see the circulatory system wired in parallel or series.
bio - 1. EK bio and 101 bio passages 2. Kaplan 3. PR/BR however, these don't suck, they're just detailed which turns off many people.
Physics 1. BR/Nova 2. PR 3. Kaplan I really think BR but they're are people who swear by nova on this site
Verbal 1. Ek verbal and 101 passages 2. PR 3. BR 4. Kaplan (read stay from)
Gen Chem 1. BR by far 2. PR 3. Kaplan/EK
O Chem 1. BR by far 2. toss up between Kaplan/PR/Ek
That is a general list of what i have read on SDN for the past 4 years, i came here and lurked throughout highschool. Good luck and hopefully this will help. EK is for people who KNOW the material and want review. If you are weak in something BR is the best since it's the most detailed and PR is detailed too, Kaplan is in the Middle, and EK is the least detailed but that doesn't mean it's bad. Just depends on the person. If you can I would buy the BR Chemistry books and Physics book. If you complete the PR science workbook along with BR science passages and EK bio, you will kill the sciences. Ek Verbal should help you out with verbal.