Thanks for your replies , which are very useful!
i need to point out that I leave in Europe so I guess that some brands are not really represented like Salk (thx @acman3 )
the Monitor audio centre channel idea is not bad and deserves to be tested. I have the Silver C350 which works very well and indeed I would need the Gold or the Platinum to match the TAD ME1. Maybe also considering the Platinum 3G?
As for budget (@soix ), it should be around 10k€.
If you have any other suggestions / ideas, please feel free to share them!
thx again