I don't know if they are the best. I know Mr. Dunlavy doesn't feel the dome midranges are worth a flip, and I don't know the physics or reasons behind it. Obviously there is some time delay between sound coming of the edge of the dome versus the center, just like in a dome tweet--one more type of phase distortion. E-speakers lists a new Zellaton driver that claims one of the best and then Skanning makes a nice 4" driver. I really couldn't claim them as the best. Loudspeakers are systems, and one driver isn't always superior since the application matters. If someone wants the even dispersion characteristics of a coaxial type loudspeaker, you won't get with ATC, you'll have to go with volt, cabasse or others. I don't doubt the ATC are nice units and better than alot of stuff. But there are so many international companies I'm sure I'm not aware of what they are doing-who knows all the stuff the Germans are doing.