I heard the F1-10 (I believe), at the recent Capital Audiofest. It was one of the better speakers I heard at the show--very dynamic and lively without being harsh or lean sounding. I liked it more than I liked the Tannoy speakers I've heard. I like the higher end Tannoy speakers, but, they do have a slight sibilant edginess that the F1's manage to tame. They were being shown with Bryston amplification (not a favorite of mine) so I would really like to hear them with some of my favorite tube amps.
This is something worth seeking out for an audition. I believe that the dealer running the room that featured the F1 line (they had three models at the show) was from New Jersey or Pennsylvania.