OOH, Id love to weigh in on this one...
As part of our second year curriculum, the University of Rochester has what's called a comprehensive examination. 2 Weeks of various testing, but one part of it is a mock board exam. Our school used medrevu. I took the full test, but they couldn't handle the volume. The program kept getting stuck, it even failed to score several of our students exams. This all happened in the first of 8 blocks of students to take the test. Our school decided to get rid of medrevue and use an examination offered by the USMLE. I found that the USMLE's mock exam was much harder and was quite a bit different from medrevu.
I have yet to use my Q-Bank, however. I plan to start today!
Ed