@pindac I couldn't agree with you more. I also chuckled when I read the assertion that "most of them [single driver speakers] don't sound very good once the listener gets past the honeymoon phase." It's amusing how audiophiles love to make such dogmatic statements without any firsthand experience with the subject at hand.
I have gone through my fair share of speakers at various price points, design and topologies, brands, etc. in the last 20 or so years. Every speaker I owned had strengths and weaknesses. There is no one speaker out there that is optimized for everything. All design choices have tradeoffs. I have now owned German Physiks Unicorn II speakers for over 6 months. These are single driver and omni-directional and are just about the best speakers I've owned ... ever. There is absolutely no lack of dynamics, soundstage, treble, bass reproduction, and transparency. I sold my pair of REL S/510 and, then later, another pair of Wilson Benesch Torus subwoofers. The bass produced by my speakers is more than enough to compensate for a lack of subs. This should tell you something!
Another aspect of single driver speakers is how your ears get attuned to a lack of crossover. There is a continuity and flow in the music that one can only appreciate after living with a single driver speaker for some time. It's as close to the real thing as it gets.
I hope people can move on from the misinformation regarding single driver speakers and try to own one and live with them before peddling generalizations.