I think you’re talking about speakers in different ranges. I find the Kef CR160s and Paradigm Homes to be muddled compared with the Dali Oberons or Opticons.
It should not matter for Atmos heights, but if you’re doing general music listening you’ll notice the difference in clarity and treble. I would try to make sure you trial the speakers or the a similar sound profile.
My Paradigm Elites are clearer than my Zensors, but would be a good match for the Oberons and Opticons.
Main 7.1 HT: Dali Zensor (7s, Vokal, and 1s), Emotiva E2s, HSU ULS-15 MK2, Emotiva BasX preamp/amps (MC-700, A-300, A-500)
Kid’s 5.1 HT: Dali Oberon (5s, Vokal), RSL C34Es, HSU VTF-2 MK5, Denon X2400H
7-Zone CCA/Spotify WHA: Paradigm (E-80Rs x6, P-80SM), Def Tech AW6500s, Polk MC-80, Emotiva BasX amps (A-700, A-500), FiiO D3 DACs