Hi Carey,
I have had listening experiences with the Rockport Arrakis, Altair II and Lyra. I have had less experience with the smaller models.
I, too, find that Rockport has a “house” sound similarity across the models. I happen to love this house sound, which I characterize as a very natural sound with a tonal balance which I find to be a bit warmer and more realistic than Wilson.
I vote for the Rockport. Be advised that they require a lot of power to be driven properly and sound their best. I would not drive Altair IIs or Lyras with less than about 350 watts.