Although I haven't heard it, the Sub/Play3 or 5 pair combination seems to be a high quality sound system for music at home, giving a high end audio system a run for its money, provided one doesn't want head banging levels of sound. I am guessing that a sub+play 5 pair will do that duty as well, in most homes.
The truth of the matter in most homes is that the wives either tolerate or hate most 2 channel audio separates systems, for the wiring that mars the esthetics in a home.
Thus far, Sonos has been an icing on that cake though, bringing in the benefit of internet/digital music to existing high end 2 channel set ups.
Now it looks like it can be the entire iced cake - a play 5 pair, and a discreetly placed Sub, with wires running just to the mains power. No more CD players, DACs, amplifiers, speaker stands, and component/CD racks. With sound as good as that of mid range 2 channel audio systems. Owned music, with lossless rips on a NAS, hired music from internet service providers, and free internet radio from the thousands of stations. All controlled from a handheld device of your choice.
Plus all the Sonos conveniences and flexibility, that Sonos users know so well. One can even break up the main system by moving the play units around to rooms/balconies/patios, as and when required, where budget is a constraint to buying more dedicated units. No dedicated 2 channel audio system provides that capability.
Way to go! And since Sonos thus far has always provided backward compatibility to the installed base, good news for existing customers as well.
All backed up by a world class support service, free for life.
What's to not like?:D - for all the long suffering wives/partners too...
PS: And unlike a dedicated set up, one can start small, and build up to the desired set up by getting just a play 3 or 5 unit first, starting the journey with that small step. No dedicated 2 channel set up can match that, got to get all the basic elements in to even start listening to music.