I recently asked a similar question only about upgrading up from my current set of speakers. Aside for some of the more interesting suggestions the one common to several replies was to go around and listen to as large assortment that you have available to you. I mentioned that I had a set of Klipsch Heresy II years ago and with the electronics I had then they were rather bright and fatiguing for long listening sessions. I was recommended to revisit the Klipsch III’s which got me thinking. I had a pair of Klipsch KG4’s stored away for years and decided to drag them out and have a listen again using them with the subs that were part of my Shahinian Hawks.
To my surprise, the harshness was gone, and they had good base (they had neither previously) and very efficient. There are lots of them around on the used market. They have performed well for rock, jazz but haven’t attempted anything on the classical side.
Just a thought…