I have a friend.He is a trainer & horse breeder.His breeding program is just that breeding appendix QH
.I have spent alot of time at his barn so been around & handled several of his horses & seen them in training.His horses are versatile, have a wide market selling as big ranch horses,track pony horses,barrel racers to the English riding jumping & dressage. He stands has 3 studs, 2 are AQHA other a TB.His broodmares are also both AQHA & TB.He has a goal in mind of the type of horses he wants to produce & over the years has seen what crosses work for him.
. He has been successful in his program in my eyes