I liked him a lot, his lectures go a bit slow, but thats good because you don't feel overwhelmed. he always includes an example with every new topic that is easy to understand. If you really understand the topics, the midterms are easy. Just make sure you read the question right, sometimes the wording can be confusing. Enderton is really smart and such a nice guy, and you should use voh if you have any questions, he always answers within a day. He actually works out the problem you ask about himself, because the textbook answers are wrong a lot, which is nice because he puts in time to make sure students know what answer is right and wrong. If you want a class that isn't too stressful and you do end up learning useful stuff, take him!
Good class, he is very thorough at explaining the subject, the midterms are simple, the final a little tricky. He doesn't assign much homework but you should do them, helps a lot for the class. Overall the material is an easy concept to understand, so it shouldn't be too bad. goodluck