I'm currently set up in a roughly 13 x 15 room. It not very big. That will hopefully change in near future to a slightly larger space.
I'm using Forte IV but eventually want a horn loaded bass cabinet like a LaScala or Vittori. The Forte IV sound really good with the Toolshed , will be even better with the 101d preamp.
Not sure about single driver designs, I have virtually no experience with them I did hear Charney speakers a while back but it was in a conference room type of setting
The Preamp and Aurender will be my last purchase for a while. I totally went off the rails this year buying, trading and selling stuff.