How did you decide which surround speakers would timbrally match the Meridians, or did you come to the conclusion that it doesn't really matter?

Seating-wise, I eventually went with some Ligne Roset Togos as I found, with M6s as surrounds, I needed to keep at least their top drivers and my head unbstructed by my backrests.

Main System: Trinnov Altitude 32-8-16, 271, 2 x 8KXE, 1 x 8KPP, 6 x M6 Surrounds, Rel No.25, Oppo 203, Zappiti Pro 4K HDR, Roon, WiiM Mini.