The meta is channeled disc to control rear projected high frequencies. The blade achieves its goals, imo, of a flat frequency response and KEF’s unique version of point source. Besides that and their cool design, I do not think they are remarkable in any other way. Unfortunately have only heard them with Parasound.
I have heard the sopras many times and personally can’t stand them. They are dwarfed by the Utopia line, but that is just my opinion.