Which eeveelution is the best?

Answer 1

There's no such thing in Pokemon. It's all about how you use them. Choose your favorite, or one that would balance out your team, all I can tell you is what attacks I prefer to use on mine that manipulate their strengths and weaknesses. Take note these are for the generation IV (D/P/Pl) in-game Eeveelutions, not competetive battling or anything:

Plain Eevee: Double Team or Substitute, Last Resort, Dig, Yawn/Wish/whatever move works for you and your team

Vaporeon: Last Resort or other hard-hitting physical move, Surf or Hydro Pump (I prefer Surf because of it's greater accuracy, but it is an HM move), Ice Beam, Shadow Ball or Dig

Jolteon: Thunderbolt, Magnet Rise, Dig or Iron Tail, Double Team/Substitute/whatever works for you and your team

Flareon: Flamethrower, Dig or Iron Tail, Last Resort or other hard-hitting physical move (even something like Body Slam, Flareon's got great Attack, though I'd advise against Giga Impact due to it's low Defense -- it'll be vulnerable for a turn), Double Team/Substitute/whatever works for you and your team

Espeon: Psycic, Morning Sun, Last Resort or other hard-hitting physical move, Double Team/Substitute/whatever works for you and your team, AND if you're playing Platinum, you might consider Signal Beam and Zen Headbutt

Umbreon: Dark Pulse or Sucker Punch (Suck Punch is Platinum-only), Last Resort or other hard-hitting physical move (Giga Impact might be a good choice, since Umbreon has great Defense and Sp. Defense), Confuse Ray/Moonlight/Screech/other status affecting move, a move that works for you and your team. I dunno, Umbreon has a poor movepool. xD

Leafeon: Leaf Blade or SolarBeam (depending on whether you mind charging, but has good defense to take a hit while doing so), Synthesis/Wish/Swords Dance/whichever power-up you value, Aerial Ace, X-Scizzor/Giga Impact/Last Resort/other hard-hitting physical move (like with Flareon, it has good Attack, so really any decent physical move)

Glaceon: Ice Beam (or Blizzard if you like the accuracy risk, or want to sacrifice a move for Hail), Wish, Aqua Tail (for Platinum players) or Water Pulse, Dig/Iron Tail/or the typical hard-hitting physical move

Always remember to pay attention to your Pokemon's stats, strengths, and weaknesses. Good luck raising a successful Eeveelution! =)

Now i like Flareon 4 its good atk,sp.atk,sp.def stats teach it flame thrower Quick Attack, sunny day,will o wis/roar/fire blast

Answer 2

I personally think that Glaceon is best. But every one of them is special in their own unique ways. For example;

Glaceon and Espeon have higher SPECIAL ATTACK than the other eeveelutions.

Leafeon has a higher DEFENSE than the other eeveelutions.

Umbreon has a higher SPECIAL DEFENSE than the other eeveelutions.

Flareon has a higher ATTACK than the other eeveelutions.

Jolteon has a higher SPEED than the other eeveelutions.

Vaporeon has a higher HP than the other eeveelutions.

Glaceon resembles a Snow Fox.

Espeon resembles a Cat.

Leafeon resembles a cat-part-fox.

Umbreon resembles a dog-part-fox.

Flareon resembles a lion.

Jolteon resembles a dog.

While Vaporeon resembles a Fish-like dog.