Depends on you but i would choose Essie!!!
Lamar Cr (ELO-banned) > Eyrik > Oyoh > Essie, El Gringo > Eyrton, Hammer
And you should really get Alexei for that deck. You're probably on a budget, so Marina and Striker might be little too steep....
I just bought back my Alexei but i have to train it
Eyerton is more stable, but Essie is better if bonuses are active and you just lost. Either way, it's not bad.