I voted for the 1/48 VF-1, I just got a super stealth and that thing is perfect, no floppiness, no crooked gunpod, perfect transformation, extra clown hands, removable panels, extra missiles and pods, that thing just has everything...
I would say the VF-0 close second, I can feel it looking great even when I'm not looking at it... YF-19, crooked gunpod ruins it for me, I don't know how many years making it perfect and they can't get a gunpod to stay still in a $160+ toy, c'mon!