Aurum Cantus true ribbons and AMT. I love um. I like two horn loaded planar designs to. They were over 25khz
There are a lot of soft domes and rings I like to. They just don't have the range.
There is not a single hard dome I like, diamond, Beryllium, iron, magnesium, SS or tactile. YUK!
Mid range that different. There is a couple tactile domes I like 1 1/4" - 2" or so.
Regards