Yes my choice was between the eQ3 Max! valves (which however I would be using without the whole IP system, but only with a CUL and the relative pimatic plugin) and the Bluetooth Eqiva valves (and I leave to you the discussion on wherever these are BLE or not). From my understanding the first system would work better in term of walls penetration, while the second one would be simpler, needing only a wall mounted tablet with a Bluetooth dongle controlling the valves (radiators are all within a 10mt range from it, and in case the whole thing won’t work, I will still have the opportunity to use the phone to command them). The second one is also cheaper (except in Germany where you can get the eQ3 valves for less than €20 each).
One thing is sure: I don’t want to use the Max! Cube as it is another power consuming device to add to the house and its interface is old looking and utterly complicated.
Despite that, everyone here seems to be suggesting the Max! eQ3 solution so maybe it is the right choice, but I think with this last post I expressed my intentions better (hoping that this topic would be useful to anyone who wants to improve their heating controlling system).