Original Quad ESL 57's have as fine a midrange as I've heard. The closest non-planar I've heard would include the ATCs and Harbeths. Of the Spendor range, the SP100 is stronger in the mids than the S8's but also more pricey. One other speaker that did enough in the mids for me to vote with my wallet were the Mordaunt-Short Performance 6's - very transaparent and seamless integration of the mids with upper and lowr frequencies.
Midrange Better Than Harbeth or Spendor?
I recently auditioned a pair of Harbeth SHL5's and Sendor S8's and was really impressed with the mids on both of these speakers. I was wondering if folks out there who have first hand experience could recommend other speakers that equal or surpass these two in the midrange. Thank you.