The place we now do pitching at have 2 pitching coach.
A MiLB former pitcher! A 18 year former MLB pitcher!
We started with the MiLB at a different location and after a while found the MLB after!
The former MLB coach tells you the absolute truth he focus on the art of pitching (technique, form, to locate the ball, execute each pitch with control, how to recognize when you do it wrong-what you did wrong and how to correct the next pitch, lots of mental conditioning) !
The former MiLB coach uses king of the hill, teaches velocity, lots of gadgets, tell you what you want to hear!
The kids with the art of pitching, zero gadgets have amazing pitching ability!
I’ve seen it in action, my son was using it with the MiLB coach and all I can say is I wish I found the other coach earlier.