I've ridden in the Senior Event (thought she had a Diploma but found out otherwise) and I'm not a fan, found the seat too deep and my legs pushed forward.
I also had the chance to ride in what I believe was an Alumni and liked it. It's a CC not an AP which I think made the difference.
I'm looking into the Diploma.... but I would love to know how they fit a high withered horse? Every CC or AP I've put on her has sat right on her withers which is making me a little nervous about committing to buy something without trying it first.
Testing saddles isn't really an option... I work in our only local tack store and I know for a fact the saddles we carry won't fit her. Online seems to be the only option at this point, and I'm trusting in you guys for advice :).