Hi MW!
I voted for the Zero, as i think it's the one most grounded in reality(ok that sounded rather silly). But IMO it's the most ungundam-like valk(VF-25s being on the other end of the spectrum, but i still love em ) out there that extrudes a warbird feeling. It's robust, built for war, and have a huge list of compromises which gives it a certain aura of vulnerability that only pure pilot talent can make up for.
Or maybe it's coz my first yammie is a Zero
Cheers