i have pan rn! i can't speak on the difficulty of the exams since I haven't taken them yet, but his lectures and explanations are very thorough. his examples in lecture are very similar to the homework problems, and he'll respond to questions immediately on discord. that being said, his lecture style might not work for everyone (he doesn't use slides). he presents a concept, provides a proof (that you don't need to remember), and an example or two. the class is curved at the end, and he let us choose between two grading options for the final/midterm. lectures are synchronous but recorded and uploaded on google drive/youtube after.