Did you hear TAD Compact Reference One and/or TAD Evolution One versus your Magico S5.
I heard Magico S5 last week with Zanden power, 2 X 90 W tubes and found it beautiful, especially very open, lots of detail and not harsh, but also a liitle weak at the bottom.
Heard S5 before and then there was much more low-end, even a little too much for my tastes.
Indeed careful setup with electronics and room is highly recommended to reach audio nirvana.
So I think Magico and also TAD can accomodate listeners with very accurate sound, which however both can be too clinical for some.
I heard Magico V3 with all Spectral gear and while it was sounding very correct it left me cold as it was.