Oh hell, I'm happy with anything on any end of the spectrum, except the chain guns, which are terribly inefficient. Though I'm very partial to Black Widows for their sawn off shotgun like stats. Low range, high damage, high power requirement, but if you have high damage, you won't be needing many shots to take down most fighters.
I don't have a Xeno character mind you, though I've been thinking of making one.