I did not avail myself of this sale but did purchase a pair of R3 Metas. Best speakers I have ever owned (although that probably isn't saying much). I have them paired with a single HSU VTF 1.MK3 sub. I am having some difficulty in getting placement of the sub for proper augmentation. The speakers do pretty well without the sub, but I do like to hear that lower octave that is not quite within it's reach.
KEF final call
FWIW; Received an email today from KEF about final call on previous generation R series speakers. Good pricing for anyone wanting to dip toes into KEF eco system at probably better than used prices. R3 is $1400 a pair, down from $2200. Larger R series for half or better. Even a few Reference series in the mix.
No affiliation, just a satisfied customer. These are on available directly from the KEF website.