QH are incredible horses.
When told I could finallly have my own horse the old horse savy people in the family recommended the QH or March Tacky. Never regretted getting my QH (more robusty than the March Tacky). She was a joy to train as she grew up. Always willing to work hard. Would do whatever I required of her and very forgiving if something happened (didn't refuse to do it the next time).
She would cover 40 miles a day without complaint when I wanted to go off for a few days. When we moved cattle to different pasture it eventually got to the point that I was just along for the ride, since she would anticipate and react to cow breaking off before I noticed.
The only reason I don't own one now is that I don't need the versatility, but the easier gait (I'm getting older :)) ). No more working cattle. No more drag racing against my uncle's pickup down the turn on the dirt road (she'd win), etc...., but the long distance riding is going to be a lot longer. Now I something bigger to handle my 20% weight limit for making the longer rides. They can do the distance, but I'll want to carry more now then I did then and I'm not willing to require them to carry the higher % of their weight. Not that the wouldn't willing carry it.