I personally would not recommened a Quarter Horse for serious show jumping (showing, not just for pleasure). They are pretty stocky, and were built more for working on ranches roping and cutting cattle. They also make great pleasure riding horses, like Jack. An Appendix Quarter Horse might be good, because they are crossed with TB. If it is just a Quarter Horse, I wouldn't use it for show jumping. This is based on the Quarter Horses I work with every summer, and others through out my life.

If you were into serious show jumping I would recommed the breeds listed in my first post. I have seen all those breeds perform before, except for the Irish Draft, and they did a splended job.

A wonderful website to see horses for sale is www.equine.com. If you do search by horse, you can alter it to find EXACTLY what you want (i.e. breed, performances, location, etc). You might want to look around there to get an idea

GSDgurl- That's really neat! At the stable where my friend boards Victor there is a TB/Cylesdale (I believe), and the owner does dressege with him. I think it would be really cool to have a draft cross!!