Male or female Doberman?

So, I have a male Golden Retriever who is five years-old. He loves every dog and every dog loves him, we foster dogs and our current girl is extremely dog- aggressive, but she is a baby towards Ryker! Once our foster gets adopted, I will have the choice of adopting a Doberman (shelter or purebred, I don't... show more So, I have a male Golden Retriever who is five years-old. He loves every dog and every dog loves him, we foster dogs and our current girl is extremely dog- aggressive, but she is a baby towards Ryker!
Once our foster gets adopted, I will have the choice of adopting a Doberman (shelter or purebred, I don't know yet) or keep on fostering. I think I might want to adopt a Doberman, but don't know wether to get a female or male because we already have a boy.
Temperaments would also be appreciated. I usually know this kind of thing, but I have honestly never met a Doberman owner.

Thanks!
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