My favorite would be Umbreon and Espeon.
They became my favorites when playing Pokemon Colosseum. I don't think they ever left my team on that game.
I Like Umbreon more because it is a dark type and I think it is really cool looking.
I've always chose what was most fitting to my team which were incidentally the ones I found cutest.
So, Flareon in the first games and Glaceon in the later games.
They are my favourites by far, orignal Eevee is cute as well but I never found Normal Pokemon to be useful... :nod:
Umbreon has always been my favorite out of all of the eeveelutions. I absolutely love dark Pokemon so naturally this eeveelution would be my favorite. :3 Not to mention that the design of the Pokemon looks pretty awesome.
A close second favorite would be Vaporeon though, since water also happens to be one of my favorite types of Pokemon to use.
A lot of things have changed for me over the years for which Pokemon I like and which ones I do not like. As for the Eevee evolutions, Jolteon has always been my favorite, and Vaporeon has always been my least favorite. What's interesting is that Espeon used to be one of my favorite Eevee evolutions, and Umbreon used to be one of my least favorites, but now Umbreon is my second favorite evolution and Espeon is now my 3 least favorite.
I'll just make a list of the top 7 Eeveelutions