Hi Raul,
i´ve tried the London just in the Mission already. It is good, but as i don´t know, how it could sound, i can´t answer the question, if it is at 70, 80, 90 or nearly 100% of its performance. The Mission Mechanic is rewired with Cardas.
In the Sumiko my DV XV-1s is mounted, and it is so wonderful, that i don´t like to dismount it at that time. Maybe later. The Sumiko has its own silver internal wire wit directly soldered Discovery Four Plus external wiring. Maybe i will rewire it with one continous Cardas some day.