Not all the cow horses are tanks. Short, sure, but some of them are more catty and agile than tankish. I had a cutting bred gelding a million years ago (like…30+ years ago) who got too tall to be ideal for cutting (he was only 15.2, but that’s “tall” when your job is to get down in the dirt chasing a cow). He was a lovely horse, looked almost like a small TB (and solid black). He was a lovely little dressage horse.
However, if I were in the market now, I’d find some footage of a few of the AQHA World classes (WORKING hunter under saddle…not the traditional class, the over fences classes, maybe working Western, and possible huntseat equitation) and I’d pay attention to the sire and dam names on the horses as they are introduced when they enter the pen. They usually come trotting down the middle of the arena as they are being introduced, so you get to see them move and you might start noticing that you really like a certain type that have similar bloodlines.
I’ve been out of the AQHA scene for so long now that I don’t even know who the popular sires are these days.
Kinda makes me want to go watch some World Show classes though. Hmmm…