Sonos Era 100 vs Era 300 for ceiling rail mounting with Arc Ultra + Sub Gen 4?

Hi everyone,

I already have a Sonos Arc Ultra and Sonos Sub (Gen 4), and I’m looking to add rear speakers. I specifically don’t want to place the surrounds behind the sofa, which is why I’m considering mounting them on a ceiling rail lighting system instead.

I’m deciding between the Sonos Era 100 and Sonos Era 300, but I’m unsure if the Era 300s are worth it when mounted that high. Has anyone tried ceiling-mounted surrounds with this kind of setup?

Would the spatial audio benefits of the Era 300 still be noticeable, or would the Era 100 be the more sensible choice in this case?

Also, does anyone know of any rail mounting solutions specifically for the Era 300 Appreciate any insights or experiences!