He's so nice. Plus he's a pretty good teacher too, he's one of the better professors at UCLA.

Manolescu is a really solid professor. He gives you what you need to know, presents the material very straightforwardly, and doesn't throw in any weird twists. I would definitely recommend taking him. 31B is a difficult class, so it's not like his class is easy--but he doesn't overcomplicate things (also, when I say difficult I mean difficult in terms of calculations--most of the theory is fairly straightforward). I did rely on the textbook but not ridiculously so. Again, he's a really solid professor and there are a lot of terrible math teachers at UCLA, so I'd definitely recommend taking him.

He did not work for me as a math teacher at all. He teaches like he's talking to himself and the class was too hard to understand. He is a cute and nice person overall, but definitely not the best math professor.

He is the best math lecturer I've ever encountered all my life. Enough said.Take him whenever it's possible for you.