Conley is hands down the best lecturer I've had here at UCLA. although he is a bit slow he teaches the content in a way that is clear and coherent. If you still don't understand or have additional question he is almost always available by appointment or in office hours which he normally extends until all questions are answered. I've taken him for 2 quarters consecutively now (33b and 115a) and I'm certain that if there's any abstract math topic out there, Conley is the best one to explain it.