[edit]Nevermind. When I first looked at this the other posts wouldn't show up.
Well, of course I would put Flareon, but I won't. x3
Flareon--Has great Attack, good Special Attack and Special Defense, and decent HP, Defense, and Speed.
Leafeon--Has great Attack and Defense, good Speed, and decent HP, Special Attack, and Special Defense.
So they're both pretty great overall. And also don't forget that EV training can also help, and that somethings also depend on the nature of the Pokemon and such.