I got worked over on some biochem today. But, it is also showing the level of detail I need to get. So, I like it so far. I definitely think it is going to help me get more out of my second pass of FA. I keep it on medium/hard. I do think some of it is too picky maybe. Straight recall of some obscure facts. But, overall good. And, I am referencing USMLE Rx.