I’m playin with my Fidelity-Research FR-64FX for a few days. I like this tonearm, it’s my first Fidelity-Research tonearm and with W-250 counterweight it works just fine with my FR-7f cartridge. The arm is easy to set up, the VTA is not "on the fly", but still easy to adjust, the tracking force is easy to adjust too. I like the black color of this combo (arm and cartridge). There is no disadvantages of FR-64FX compared to my ex Lustre GTS-801.
I use FR-64fx on Luxman PD-444 with FR-7f cartridge and Luxman AD8000 +
8030 Toroidal Silver SUT for low impedance cartridges (2-3 Ohm). Zu Audio Mission Phono MKII cable with WBT nextgen RCAs and my new Stereovox HDSE cables between the SUT and my JLTi phono stage.
Also my new First Watt F2J current source power amp for crossover-less speakers (and my First Watt B1 passive buffer peamp) giving me tremendous resolution i have never heard before in my system!
I think i will have to sell (to a friend) my WLM Minueta tube push-pull class A to justify my expenses on First Watt gear. But i will be missing silky bass of my belowed tube integrated with NOS vintage Telefunken valves.
At the moment i have no tubes in my system, Raul must be happy, lol