IMO these are more than enough to get you through the usmle. I used both of these and it was a tremendous help. BRS is a little thick and I would recommend that you spend the majority of your time focusing on the systems that you are weakest in. For example, I focused on neuropath, renal path, and pulmonology. Stick with this. There is no since in breaking out Robbins at this point. Keep on trucking!