Thanks for sharing!
I will say this, I've had the F70 on the channel several times, both in 8 and 16 Ohm. The 16 Ohm one I had prior to this one had been broken in professionally. That one may have been a bit smoother but nowhere near the F70G.
I had my contacts at Fane confirm that the F70G is a different speaker. It's not just a different label.