Thanks all for the comments!
At the end I tried the 2 cables, from wall to Power Conditioner (Ansuz C3)... and the differences were very minimal.
I felt like the Zavfino was more powerful (higher volumes perceived) and a little bit smoother. Again...these might be just perceptions.
It’s really difficult to switch off all the components...change the Power Conditioner cable...re-start all the components again and compare.
So...I ended up keeping the Zavfino from wall and the Ansuz (P2) connected to the streamer.
The other test might be to swap the cables after one week or 10 days... but, do I really want to do that?
Probably not :)