I chose Flyby because they had a PfCO course planned at a convenient location for me. I am 75 with zero drone flight time when I began the 4 day course, I was too nervous even to start the props on my Mavic Air. Enjoyed the course, the instructors (1 on 1 in final stages) were extra professional and by the time I passed I felt ready for any emergency. I haven't yet gone throughthe full after-training experience but it is clear that Flyby pull out all the stops to deal with CAA on graduates' behalf, submitting the ops manual and acting as first port of call for advice. They may cost at the top end of the scale but you can't get the confidence Unless you have confidence in your trainer.