I've heard the Magico in a audio dealer showroom and CES x4, RMAF x1 and Axpona. I've listened to the Q 3, Q 5 and the Q7 as well as the S1, S3 and S5. The S5 driven by the Absolare Passion Signature amplifier was the best sounding Magico demonstration I've heard. I didn't care for the Q models driven by the Soulution amplifiers. In fact the Q range was better when paired with the Constellation amplifiers.
I don't doubt what you say and I'll concede that you have more intimate experience with Magico than I. I can only report on what I've actually heard. I feel the Q series is more analytical in character than their S series. No question that electronics, cabling and acoustic room treatment can certainly impact the end result to some extent.
Charles