My CB-5's sound decent when standing in the center somewhat close to the bench (speakers 7' apart), but when I move to the back of the room, they lose all "warmth" and begin to sound tinny. By warmth, I mean that "meat on the bones" smooth mid tone that sounds extremely rich. A reasonable amount of bass tones in CB5 fall apart. So the Hsu which is smaller than the 340, but more sensitive, would not only be louder CB-5, but FAR richer in sound?
I hate to say this to a group, but do frequently use the receiver's Rock Arena setting when cranking the amp (rocking it out). I like the reverb "room fulling" sound, but I don't like tinny. Drives me crazy! But I also LOVE listening to acoustic guitar and piano when winding down.
Edit: One thing that I like about the Hsu, is the size. The 15" tall works better.