I never thought I'd say this, but I'd go with Kaplan
-The interface is a lot nicer, snappier, and never logs you out like Rx
-There are more questions and the explanations are better
-More neuro video / heart sound question
-It also has references to FA & Medessentials
-There are definitely some WTF moments with the questions, but better to over prepare than under prepare
-The iphone app is wicked handy to do questions in spare moments
-Not sure if this is supplied to regular subscribers but it has a pretty cool set of diagnostic tests, 7 block trial runs, and a separate physio qbank
-Really good breakdown at the end of each test by both discipline and organ system of where you're screwing up
Reasons I had against Rx
-Constantly logged me out, log in / test submit process was very buggy
-It seemed like the FA pages never answered the question! So frustrating!
-Also had plenty of WTF moments with questions.
-Questions too easy, not very varied. Didn't feel like I learned much.
-Did not help at all with "learning FA" like I planned.
Either qbank is a distant second to UWorld. I just don't understand the disconnect between writing a question and then not giving the explanation for an answer. But there's not really a huge difference if the price is a big factor there's no reason not to go with Rx.