Umbreon and Espeon don't even look that great... They don't look very detailed =/ Vaporeon and Leafeon look better,plus,Leafeon isn't weak his attack attribute is his 2nd highest stat(like I listed above)but I dunno bout Glaceon,I never used him,I don't even know why they thought of adding him into the Eevee evolution chain since Vaporeon can use ice attacks as well...The bad thing is that they don't even learn the skills of their type til lv36 or that doesn't really matter if you have the right tms but it can be annoying if you don't have the right ones for them.I also thought there was an evolution called ''Bouldereon'' looks kinda dumb to me though.But it all depends on what you want and the one you like the look of.Jolteon is fast but can die easily and thats not a risk I'd be willing to take... Even though he does look cool,dunno bout Flareon didn't use him.