Well, it would depend on my situation. If I were to buy a horse now it would be different then if I wanted to buy a horse when I actually can (when I am much older and can afford it financially).
Now ( I wish :P) :
-Not too young, but not too old. So in between 7 and 13.
My reasons are because a horse around that age (depends on the horse) has gone through a good amount of training and has some experience, though not tons, so I can still learn with him and touch up his training. (polish him I guess you could say) I wouldn't want a too inexperienced/young horse because I am still inexperienced myself and even if I have a really good trainer who would help me to perfect his/her training, it wouldn't be ideal for the moment.
I would probably click with a horse that is sweet, but still has some spunk and ISN'T a push button horse. I like a little challenge. :)
-Good conformation and is healthy
Although if he/she has some flaws here and there, I wouldn't mind if there was the "ultimate click", but no one can say no to a nicely conformed horse. :)
- Again a "click" when I ride and interact with the horse.
- Nice conformation
- Is young (5-6) so I can do some of the major training. :)
But also in the future I would like (and hope) that I will be able to have a small rescue, and rescue a few horses at a time, (train them no matter their conformation, breed, etc.) and sell them for a very reasonable small price to someone who wants a good horse with basic training and good manners.
A ride a day keeps the worries away!