Atra du evarinya ono varda.
As for looks, I'm going with Leafeon. I'm not a grass-type fan, but Leafeon's one that I would love to have. It looks really cute too! Those leaf-like body parts really catch my eye. :3
If you're talking about in-game usage, I'll definitely go for Espeon. I haven't used it before though, but I know that it is one strong Psychic-type.