I love my 16hh Dutch Warmblood mare. She's out of Ruben O. Four Seasons is absolutely right, though. You HAVE to treat these horses as your second or first job. I ride mine every business day unless storming, in which case I ride her on the weekend. I longe her and then ride her. I start with trotting lots and lots to establish collection and control before even thinking about a canter. I'm perfectly ok with that however, she is such a beautiful and smooth trotter. Then after she is supple at the walk, trot, and canter I then jump her. She makes jumps feel like we're cantering poles on the ground! She's the smoothest jump I've ever ridden. And I've jumped a lot of horses. In my opinion, a horse is a horse, and if you want a good mount, you better be working everyday you can to achieve that with your horse. I am a big fan of Dutch Warmbloods so far though.