I too like having roosters, and choosing the 'keepers' can be a challenge. I think one, or none, would work out best for your small flock, but then deciding who is tricky. If either is thinking bad thought towards you, or especially if you have small children, that's an automatic 'out'! Otherwise, let one go, and see how the other works out in your flock.
I love Wyandottes too, but breed isn't a guarantee of good behavior!
Is your Ameraucana actually an Easter Egger from a farm store? If he's an EE, I'd keep the other one...
Mary