Art, I have been on a similar journey. I have also had the Kef LS50s (for about 4 years) and have really loved them. But I have been wondering for the past few years about trying something else in my nearfield listening set up. I did home demos of the Falcons and nearly bought a pair; also the Watkins Stereo Generation 4 (amazing speakers that I couldn't make work in my really small space); and the Omega Super 3is, which I also really, really love (FAST!) and I will be moving to a desktop set up with a Decware Zen 2 watt SET amp. (The Omegas are absolutely killer for $700.) I'm only a few hours into my Anniversary P3esrs but I can't imagine I'm not keeping them. I have had the originals too and love the Harbeth sound--but these are more detailed and with a better soundstage. As far as the Falcon/Harbeth comparison goes, I know there are some who prefer the Falcons, and I would have been happy with either. The Falcons are faster, but I think Herb Reichert nailed it when he said the Harbeths "just sound right" and are incredibly easy to set up. So natural! The rest of the system is a Rega Rp6 with Hana SL cartridge, a Line Magnetic 515 cd player, a Vinnie Rossie LIO amplifier with DHT Pre, and cabling by Triode Wire Labs. I think I am off the merry go round for good! I just have to break the news to my 77 year old father--who has the KEF LS50s and will feel very sad we don't have the same speaker anymore. Maybe I won't tell him....
Enjoy! Margot