Sonos has a lot of home theater setup guidance and with an Arc + Sub (3rd) + rear speakers; they state whether the system is 7.1 or 5.1:  For 7.1 you need an Eras pair, and for 5.1 you need the Ones.  Where do the In-Wall Sonance speakers (with TruePlay) fall?  Would they fall in to the 5.1 category like the Ones?

I’m debating the In-Wall.  I have existing in-wall (2015 episode speakers with very comparable system specs as the Sonance) however the cut out is 12”x8” vs. the Sonos required 10.75”x6.93”, so I think the hole is too big and would cost (dry-wall) a bit to remedy.  But I think I’d only be missing the TruePlay option.  If you have a similar setup, I’d like your opinion on how well it works.  What I don’t want to do is buy a pair of speakers and then have unused in-wall speakers.

p.s. I did search many prior questions and did not see my specific question but several similar ones.