I compared Focal's with Sonus Faber's and found them to be vastly different. With that said, I'd make sure I'd pair whatever choice you make in speaker with an amp that would bring out the best.
In my opinion the Sonus Faber's have a "softer", less dynamic sound, and would probably respond well to a "fast" sounding amplifier. I have found the Focal's to benefit from smoother sounding amps, I have a McIntosh MC452 driving my Sopra No2's, a very good match...but have heard similarly priced Sonus Faber's connected to that same amp, and they sounded (to me) somewhat muted. When I did that audition the Focal's seemed to fill the room, while the Sonus Faber's sounded like they were played in another room...very much muted.
In my opinion the Sonus Faber's have a "softer", less dynamic sound, and would probably respond well to a "fast" sounding amplifier. I have found the Focal's to benefit from smoother sounding amps, I have a McIntosh MC452 driving my Sopra No2's, a very good match...but have heard similarly priced Sonus Faber's connected to that same amp, and they sounded (to me) somewhat muted. When I did that audition the Focal's seemed to fill the room, while the Sonus Faber's sounded like they were played in another room...very much muted.