Kensington vs GRF 90

[Sonic Guild]

I am in between the Kensington or GRF 90

room 15 x 22 x 9

What is the difference in terms of sound signature?
Kensington is 3000 cheaper but not quite sure which one to get!
How come is the GRF more open and has more resolution but there are only 90 speakers of it. In other words, why would Tannoy make a better resolution speaker in a limited edition? If it is so good why it is not replacing any older Tannoy speakers?

Can someone compare the Kensington to Sonus Faber or Focal?

Thanks