CS 6140 Machine Learning Virgiliu Pavlu OR Ehsan Elhamifar

I’m already registered for Pavlu, but this morning I got a notification that I’m off the waitlist for Ehsan and have 24 hours to register.
I’m in two minds about this and would really appreciate guidance from anyone who has taken this course with either of these two professors.
Could you please explain how both professors teach, what their assignments are like, and most importantly how their exams are?