The dome mids I've heard on Infinity Kappas and Energy Veritas excelled with sax, woodwinds and to some degree with female vocals. They had a breathing quality rivalling ribbons and 'stat's. Because of limited bandwidth, they are best on 4-way or limited 3-way designs.
Are dome midrange better than cone designs?
I have noticed that companies like ATC and Audio Technology use a dome midrange. Is there and advantage to the dome design? It does not seem to be used much.