I completely get you. That is how I judge a good horse is by what he/she can do. Anymore, I really don't care about pedigree's. 2 of my favorite horses in the world are mutts (mustangs) who have some serious appearance issues but they are sound, strong, and able. I like to sit on a horse that has some mass (but not too much) that has bones and feet under him that are strong enough to take off running across a rough pasture without worrying if he is gonna take a bad step and break a leg. I know that can happen with any horse but it is much less likely when they have big bones. Like my Dad always says "When I climb in the saddle, I like to feel like I have a HORSE under me."