Imagine your a 2000 FIDE player. You seriously need a coach as you want to become an IM.
You got two options for coaches and took their trail coaching lessons. Based on your experience which coach would you take. Take this as a would you rather question, avoid any bias, imagine yourself and choose for yourself. Both options have their own pros and cons and reason for someone to choose them
•A 2500 FIDE coach and GM. He has very enthusiastic communication, socially skilled with nice behavior. He has the ability to explain things related to chess in a more fluent, clear way. He also is adaptable to your learning
•A 2800 FIDE coach and GM. He is not disrespectful, but not very communicative and socially good. He often takes time to explain things and sometimes gets confusing. He struggles to adapt according to you, mostly relying on his own journeys for your coaching.