Sometimes I want a horse that acts like a lap dog. Actually, that's mostly what I like. If the horse isn't all over me, I sell it on and no regrets. It'll be the perfect horse for someone else. If it's a show horse that I'm riding and strictly want it to do a job, I'm ok if it's not a lovey dovey soul mate kind of horse. Most of the time when I buy outside of my program I'm looking for a work type horse and I'm ok with stand offish.
The ones I breed, and raise for ME, absolutely have to have that in your tent personality, love me to death and I love them to death type thing going. They can be opinionated as all heck, a complete PIA but they gotta come running to the gate to say, "HI" or they go down the road. I have to look forward to seeing them everyday or I don't want to be bothered with the work.
So, you have to figure out what's important to YOU and then get that horse. Do you want 'My Pretty Pony who is all over you'? Or is 'butt ugly but jumps to the moon' more your style? Or, 'I'll do my job but not exactly act thrilled but give you 110% all day everyday and when you're done leave me alone' what you're looking for? Once you figure out what pleases you the most, and what you're willing to overlook to get the most important traits, then you'll find just the right horse.