I did compare the FS 2 against the Wilson Sabrina. Bought the FS2, tested with a Hegel H300 and Electrocompaniet CD player, the FS2 did everything a bit better and cost less. The FS2 is everything the reviews report. Works great for me, but not everybody's cup of tea.The Sabrina is a very good speaker.
The music tested covered everything but Metal, the FS2's did a great job with everything, they do disappear behind a wall of sound. Many wow moments. I am enjoying music I haven't listened to in years.
I never tested the Sophia 3.
At this levels of speakers you really have to demo them with your own equipment to make your best decision.