First off, this is chemistry we're talking about and it is just as boring/horrible as you can imagine. BUT Rupnik tried his hardest to make it as entertaining as possible, between his hilarious, but lovable accent (which you get used to) and bringing little rubber duckies to class he tries very hard to keep everyone engaged which is hard to do to say the least. If you go to his reviews, which are amazingly helpful, and study the old exams he gives you its very possible to get an A. The final is made by the whole department and rupnik gave us a 16 point curve!! haha so in my opinion take him over Hogan at least.