What is EEVEE's Best Evolution? or Which one is your Favorite? Mine Would Be eitheir Umbreon, Or Leafeon.
I'll change your vote to Leafeon for you. 
Anyway, my favorites are Umbreon and Flareon. 
Jolteon has always been my fav. Not many people like it as much as the others....
I like Espeon, Leafeon and Vaporeon myself. Though I don't know about Leafeon, it looks solid!
Umbreon, Leafeon, and Jolteon. They are the coolest looking ones.
all except the originals are cute
Espeon, Umbreon and Vaporeon. Jolteon was meh, Flareon was alright, and the new ones are awful.
umbreon and espeon[sp] are my favorits becuse there is somthing with them i like i just cant put my finger on it
Vaporeon has always been my favourite, but I like Leafeon as well considering I've always wanted a Grass-type Eeveelution.
My favorite is Umbreon. It looks really cool.