TPR has different kinds of FLs. There are those from the "cracking the mcat book-2013-2014" (online+paper) and those from the subject review books (online only - core tests). I took one of the core tests and the PS was very difficult, the VR and BS slightly harder. I took two from the "cracking the mcat" and those seem close to the real deal. I also think TPR has more FLs when you sign up for the course, but i haven't taken those.