Agree with the poster above. Huayang focuses much more on pleasing their students. Their teachers are clearly qualified and experienced, plus they have small classes and good management.
KCEL have two campuses. One in Xiaoximen and the other in the North. They can have a disappointing level of teaching despite advertizing a lot online and teachers are below average when it comes to knowledge and professionalism. Try to read reviews and forum comments of previous students who posted on this website to get an idea.