Heilman is very straightforward. He gives examples, posts lecture notes for you to follow along with, and even throws in some problems from homework onto the midterm.

Overall, I can't see him being incredibly engaging, but he definitely gets the job done. While some have said his voice gets boring I think it's very easy to follow along with as you go through lecture notes during class.
Would definitely take him again.

Lectures were incredibly boring. His midterms and final were super hard but the grades were very curved. I worked hard on this class and only got a B.
Would not recommend him.

Heilman isn't a bad guy. He knows what he is talking about, but it seems like he doesn't really care most of the time. He does come off a little bit apathetic and has a slight monotone, which may explain my napping habits. He's there because it's his job, and he does an adequate job at it.
Class was curved so hopefully it will be alright.

Please do remember to review your material beforehand, which is silly to be honest because you should be learning new material in class instead of reviewing.

Very good professor. The problems on the homework and tests can sometimes be convoluted. What he talks about in class is definitely more conceptual, whereas the problems on midterms and tests tend to be very technical.