Akane - you could be my sister in law
I've never had a high opinion of speed folk, until I met her. She moved up here and wanted to get into speed events. She had an off the track QH mare, green broke to ride.
Well, she now is doing 2D on her, and this August, when they got married and had a lot of family at the farm, she gave pony rides on the mare, including letting some folks try to ride her on their own. She would do walk and trot perfectly calm, easy, and controlled (the riders were not experienced enough to canter, let alone go full out). Not the "typical" speed horse I remember.
I've watched her run barrels, and since she's a former show jumper, she will do a very calm, collected canter in a small circle, and then BANG! Full bore ahead! She goes to a LOT of clinics, and her form is a pleasure to watch, the horse is obviously not doing it's best because of force, but because it's happy. She does poles well too. When she stops, it's just sitting back in the saddle, and the horse comes to a dead stop, very, very little rein contact.
I coordinated a sale for her from a friend of mine, and she bought a 7 y/o unbroke QH mare. Within two weeks, she was walk, trot, canter both ways, nice circles. She's already started "Expo"ing her, and they do have 4D here, and the mare is doing 3D without stress or pressure, but just easy, calm, good training and exercise.
I wish all speed folk would train like you two, so one wouldn't have to see horses flipping over riders or running unhappy