I had a simliar experience but it was with the version 1 Sophia's; I had been using the W/P 7's for some time and traded them for the Sophia's, to downsize my system. The W/P's midrange was recessed and I always wished it to be more forward. (Let me take a moment to state that I believe both my W/P's and the Sophia's could have garnered better results with more freedom of movement in my room.)
When I switched to the Sophia's the midrange was more forward, which I liked, but they were more aggressive and fatiguing just as you experienced. I did not experiment much with placement of the Sophia's as I had another set of speakers I prefered so I sold the Sophia's.
When I switched to the Sophia's the midrange was more forward, which I liked, but they were more aggressive and fatiguing just as you experienced. I did not experiment much with placement of the Sophia's as I had another set of speakers I prefered so I sold the Sophia's.