Turnberry vs Kensington

I have the Turnberry GR speakers with a Primalina EVO 400 preamp and two EVO 400 power amps plus two REL S/5 SHO subs. I don't have a good place to compare the Kensington to my current speakers. I am very pleased to the Turnberry sound but I would like to evolve up the Tannoy ladder of performance. What is the main upgrade for the Kensington vs the Turnberry?