the peaceful ones.
I don't care what a xenomorph looks like, I'm not sleeping with it. The peaceful race will give us tech and won't "preemptive strike" us, so I'm all for that. That, and their(the amazons) aggressive nature makes it easier to issue propaganda to get new recruits. And, if they're so warlike, I bet their tech is alot more combat-oriented, so less stuff to use when not killing things.
I mean, it's not like we don't already have hot women on our planet. Peaceful race all the way.