The horse my mother in law was buying was a beautiful quiet horse. i don't know what kind cuz it was before my time but a day before she went to pick it up her friend (a horse person) went to see it and found out the owner had DRUGGED THE HORSE so it would be calm. the horse was nuts. jumped and bucked and attacked and bit and stomped everything.
So watch out for that too!
other than that. i don't know to much about them!