Ehh...it's a matter of personal opinion. You can find a copy of Kaplan and TPR at the bookstore to look at. For ExamKrackers and Berkeley, you will have to ask around. More than likely people will have EK and for Berkeley, see if you can get it off eBay or somewhere cheap b/c they are pricey. Personally, I downloaded the topics list off the AAMC and checked off everything I do not know and reviewed it on my own with several textbooks and EK.