I had problems with the ceramic midrange distorting with dynamic vocals
That is common enough with consumer designs. Do you like to listen loud in a large space? Do you want something approaching panel sound in the midrange but more compact and with more low end (a better all rounder)? If so, then try to audition an ATC 150 or 100 - and since you are ok with good SS amplification then the active version coupled with a tube pre or source might be what you are looking for. Since you have owned everything American perhaps you will enjoy the British sound. In any case, the pro drivers will not compress as easily as you have experienced previously - so transieents/percussion will be very realistic. The only draw back (if you are used to American sound) is that the bass response, although extended, is light (detailed and tangible) rather than heavy or impressive.

