I currently have SB3651-E6 which is a 5.1 system. Atmos seems like its amazing but I don't know that I'd be able to get it at this price point. I can only spend up to 2k with Sonos by using discount. Would be more expensive going elsewhere.
My devices are LG C2 75", Xbox series x, switch. We use spotify for music so i wouldn't' get atmos while listening to that. Between playlists and family plan I don't know that i would want to switch to apple or amazon music. So my main use would likely be movies and gaming.
With discounts in mind I can’t spend more than 2k. I think the arc upfiring would be lost so if i were to do this it’d likely need to be beam + mini sub + rears.