Don’t think one could choose two speaker lines that are more diametrically opposed. Developed over decades significantly in BBC studios, Tannoy embody the British, BBC natural voice. Magico is a more modern, detailed sound. Having owned the top Tannoy, the Westminster Royal, I believe the main difference could be the ease of presentation. And the naturalness of the human voice. I have never owned a Magico but I have heard the Ultimates in a well over million dollar system. They were in a $250K dedicated room with power produced by a $100K power station. And with 5 channels-4 pushed by 16 chassis of 300B WE and a Big Mac for the bass.
Sorry, but I wanted to run out of that room screaming!
And another time in a Constellation based system-not as bad but same thing. I believe that this does not characterize all Magico but I think I have a general idea of that designer’s ear. Of great interest is the evolution of Tannoy stemming from the ears of several main designers of Tannoy now forming Fyne Audio.
Of great interest is their top model-the F1-12. A new take on the Westminster with a 12” dual concentric driver. Jay has heard them at a dealer in Florida. I trust his ear. He says that they do voices in an incredible way and also that they are beautifully built. FWIW, I would love to hear that speaker.