Mtnman, I got the same probelm, high arch and wide foot, size 11 EEEE. Our local western shop has 4400, that's right four thousand four hundred, pairs of boots in stock, they had one pair that would go on my feet.
I got them and if I wear them 8 hours at a match the balls of my feet are black and blue and it's hard to walk for a couple of days. I don't my trying something else but I ain't going to drop another couple of hundred dollars on a maybe.