I know you've had Quarter horses and you're looking to branch out, but the characteristics you just listed point right back to Quarter horses!
Of course, as others have said, any horse needs to be assessed/evaluated as an individual...
One of the best trail horses I've ever met is a saddlebred mix of I-don't-know-what-all and she's absolutely wonderful. Everybody loves her.
My main horse is a Quarter horse and his nature/manner is absolutely wonderful.
Happy shopping! Posted via Mobile Device