My pal,like most airline pilots did his time as an instructor and tells me he really enjoyed it.
He is not a flash character,his advice to me was well meaning and constructive, he thought I would get more from a combined aero course than just spinning.
I would think that his advice might have some relevance,not because he is a senior airline pilot,but because he has several thousands of hours in different aircraft including SEP's and cares for my flying safety.
Lister