I really liked uworld for my step 1 and step 2 preparation, in fact I only studied uworld and FA book for both step 1 and step 2 which was enough for passing with good scores, however the CS preparation is not at all good. some of videos very very poor quality.I Liked the abdomen and respi exam, rest is not good. Most of the cases are better explained in FA, like the reason for investigations and all the cases are almost same. I would rather recommend FA and usmle practice material interactive patient note which is free, and you can save your note if you use firefox browser. For the videos, you can just see them in youtube with much better quality. I think uworld is not worth it's money. Believe me!