I have an all eevee-lution team but i'm having trouble deciding between umbreon and espeon for my last eevee-lution. Which is better not only in looks but in helpfulness?

Definetly Umbreon it has a lot of defence and is a dark type and its weakness fighting would have a promblem going pass umbreon`s defence but umbreon has learns only dumb moves espion `s moves are better but if you got a lot of TMs then you could make your umbreon a deadly pokemon in pokemon gold my umbreon had bite,shadowball,psyhcic and sand attack.