Tie between Umbreon and Jolteon. I've actually never really used either; Jolteon never fit my team and Umbreon is battle style-wise not my cup of tea.

I don't like Umbreon in battle, but I like its design. Jolteon is very good in battle, you should try to use it.

My favourites are Espeon and Glaceon, but I went with Glaceon because she's slightly cuter(and from Sinnoh =3 ).

I struggle to choose one because their designs are all amazing, but if I had to really choose I would go with Umbreon.

flareon lover from day one. by far the cutest one idec

I'm a Glaceon gal, the ice Eevee won me over in Battle Revolution of all games, proving to be reliable and powerful. She never went down before KOing a foe first. Plus, Glaceon has a really elegant design, which I find appealing. And, of course, despite all its shortcomings, ice is one of my preferred types, which also helps.

I have to give a shout-out to Boweon, the fairy Eevee I once found repulsive. Using one in X turned my opinion right around, and I eventually grow fond of the "girly" design. Leafeon also gets special mention, I can't exactly put my finger on why, but I have quite the soft spot for the verdant Pokémon. And Espeon, because it looks like a cat. And...

I'd better stop now. Needless to say, the Eevee family ranks among my favourite Pokémon, and they've all left their mark on me for one reason or another cx

Well, Umbreon is my favorite pokemon, soo... yeah.
I even ran one OU with pretty good results, but it was a while ago.

Glaceon, it's so cute.

Leafeon. He looks classy

I love all of them but if you want me to choose one then definitely Leafeon for me.
I love the crumpy leaves they have, their colour scheme blends in so well too.
Adamant Leaf Blading Leafeon isn't a force to be reckoned with too.

Vaporeon is my favorite but I really like Espeon too!

Jolteon is my favorite since it has only one weakness. My least favorite is Sylveon. I rather have a Dragon eevee evolution.

I don't really have a favorite per se, but I do like the design for glaceon and Espeon best.

Such a majestic Eeveeloution!

My favorite has to be Vaporeon. Mainly because I haven't battled with many others ^^"

I am loving Jolteon so much! Thunder power is very very epic and I want to electric everyone XD

Umbreon is definitely my favorite. It has a pretty cool design, but my favorite aspect of Umbreon is it's un-killable battle style. In my favorite competitive team, I often use Umbreon as the pokemon I throw in when I don't know what to do, even if he doesn't have any type advantage he stalls pretty much everything out and gives me time to think about what pokemon I should throw in next. I just always feel safe when I'm hiding behind an Umbreon.

I've always had this funny image in my head where an Umbreon gets hit by a truck and the only thing that walks away unscathed is the Umbreon. That may sound pretty dark... but so is Umbreon. :P

Don't get me wrong... I love all of them. However, Espeon will always get my vote. <3 Me and my bf have this thing where he's Umbreon, and I'm Espeon, so that's probably why I like it so much. I even have a plushie of it! <3

i like glacion because ice types are cool

For me, it’s Umbreon without question! I have just always loved its design! It’s not only my favorite Eeveelution, but also one of my favorite Pokémon, period!

Vaporeon and Glaceon. Maybe I like Vaporeon a bit more.

how do you not love that face & fluff???