For me, it would have to be Articuno. Its colors are bright and very beautiful, its feathers are elegant-looking, and others would most likely be jealous when they see me flying on it. n__n I would ride Rayquaza, too, if it's friendly enough. I might ride Zapdos, but I'm not sure how comfortable it would feel considering its body is a little... spiky. I could've been able to fly around with Ho-oh, but I'm afraid of its eyes a little. They look scary to me. I would never fly on a Moltres, though, that's for sure. Since it has flames surrounding its entire body, I will be burned as soon as I even touch this Pokémon.