Jacob,
I have a red stripe anthias that rules the roost, and three female squammis from Maldives. I recently added two Bartlett's, and they all seem to be doing very well. The aggression is spread out through all species. I'd like to, but ptobably won't, add another red stripe, and a male squammi from Maldives. I'd love to get Hawaiian Bicolors also, but no room. Those are hardy anthias as well.
I've never mixed anthias species before. I now think it works out really well. In fact, I don't think I'd go with a single species ever again.