Halter horses are their own breed now. Halter used to be an additional class that performance horses entered, there were few horses specifically bred for halter.
Now- I own a "halter-bred" horse. No, he is not a national champion, but his parents were. In pasture condition, he is about as beefy as sorellhorse's guy. He has VERY jarrin gaits, and he is too structurally "stiff" to allow me to do performance classes with him. He is too posty/stiff for reining, and too long-bodied/stiff for cow work. He also doesn't have much sense bred into him, he's just a big dumbo. :) It's sad really, that he is purposely bred that way, and it reminds me so much of krazy kolor breeders.
The ideal QH to me would be the reining/cow horse look. I love the minds of those horses too (not that some halter-bred QHs don't enjoy good work). But my image of a QH is a cowy or agile and very versitile (sp?) breed.
Every great dream begins with a dreamer. Always remember, you have within you the strength, the patience, and the passion to reach for the stars to change the world. ~Harriet Tubman