It probably will not be sufficient for the test you take at school, but I really liked Kaplan for what I used it for (pharm, biochem, immuno). I used the DVDs + lecture notes and they were very helpful as far as I can tell. The only thing is that if it gets in the way of you learning the material well during MS2 it may not be the best idea. If you're doing well in school and have extra time that you don't mind using to get ahead on Step 1 material then it will be time well spent. I wish I would have watched the pharm stuff during MS2 since my school sucks at teaching pharm