@oldschool1948, The key sentence for me is "The NAD pushes the Tannoy’s with ease."
I have used Tannoys with different amps (all solid state unfortunately) and the sound was always similar. My previous NAD 3020 and current Creek Destiny amps are difficult to compare because one didn't follow the other but I do feel the Creek has more of a sense of ease about the way they drive the Tannoys.
On the other hand could that be down to having to turn the volume dial much further around on the NAD?!
My advice would be to stick with the M22 and only if and when the upgrade urge demands action, to perhaps investigate some larger Tannoys, or maybe some DeVore speakers.
I'm not altogether in a different situation to yourself in that I also want to (must) try out a tube amp before I can say my audiophile journey is finished.
Good luck with whatever road you decide to take.
I have used Tannoys with different amps (all solid state unfortunately) and the sound was always similar. My previous NAD 3020 and current Creek Destiny amps are difficult to compare because one didn't follow the other but I do feel the Creek has more of a sense of ease about the way they drive the Tannoys.
On the other hand could that be down to having to turn the volume dial much further around on the NAD?!
My advice would be to stick with the M22 and only if and when the upgrade urge demands action, to perhaps investigate some larger Tannoys, or maybe some DeVore speakers.
I'm not altogether in a different situation to yourself in that I also want to (must) try out a tube amp before I can say my audiophile journey is finished.
Good luck with whatever road you decide to take.