<p>Frank Bauerle is not only an excellent professor, but he is funny, super friendly, and approchable. I’ve never heard of the other person, so I would DEFINITELY go with Frank. However, Frank is fairly difficult. He’s very comprehensive and a single test problem is likely to cover more than one concept, so if you don’t know one part you’re still kind of screwed. I had him for 19B and he made you know more than just the key points. You had to know every technique and trig identity to be safe on the tests. Many people don’t pass, and like in Europe, you REALLY have to know it all to get the A. Overall, I’d still recommend him considering there are plenty of BAD teachers around you wouldn’t want to get stuck with either way.</p>