There is no right answer to your question as it depends on your room, distance from speaker, wall treatment etc. I have heard the 3.1s in my room; however, I did own both the Gallo Solos and the Reference IIs. In my room, I found that keeping the speakers at least 2 meters from the front wall and a meter from each side wall was essential. The side wall distance was significantly more important with these speakers as a result of the near omni-directional tweeter.
