I am assuming you want to do EM, so my advice is from the perspective of someone wanting to do great on their rotations. If you don't really care and just don't want to totally suck on your rotation, just get blueprints. First, a lot of places have either their own preferred text that you will be tested out of, or they will powerpoints that you could use which will be their test material. Contact where you are headed before you go to buy any stuff. At UTSW they lent me a FA to study from, and at UNC they lent me a pocket Tint's (although I bought one before hand). If the place(s) you are going don't have either, FA is OK. Not great, but OK. Case Files also is OK. Blueprints is not really good enough in my opinion for someone trying to blow the doors off a rotation, only good enough to get by. The best review text that I looked at was NMS, although be warned it is extensive (in some cases too much so for med students) but very good. If are the type to start working on stuff before your rotation and can weed out the unimportant (at least at this stage in the game) stuff if will serve you very well. Also, either the pocket Tintinalli's or the "just the facts" Tintinalli make some good med student references, and from what I have been told are useful during intern year too so you are not just buying something for a few months while on rotations.