You seem to be able to spot the propaganda and "facts"(..opinions..) that other people like to tell, that is good. The other posters have it summed up pretty well for you,but I just wanted to say that I appreciate you being open minded. I am owned by two Ay-rabs and I don't think that I could ever be without one again.
I don't know about anyone else but, in my experience, I have found early teen geldings to be the most sweet and willing ones.That is, of course, a generalization, but something to think about coming from the owner of a mare. LOL Good luck in your horse search and keep us updated with any news on your new partner!
On a side note, I can't stand the diaper butts on those halter horses,but that's my opinion.