One thing not mentioned is that Sonos One supports 24bit from Qobuz, but Play:1 apparently doesn't.
It's noted on Sonos site that "Older products may only support up to CD lossless quality for all tracks", which apparently refers to Play:1 and Play:3 despite being S2 compatible. https://support.sonos.com/s/article/1782?language=en_US Of course whether you can hear the difference is a different matter.
There is one big reason not to buy any Sonos products when looking for a Google smart speaker: it does not support Google Cast. Therefore you can not create a speaker group with other Google Cast based products.
This is a show stopper for me. I even read people leaving Sonos for this sole reason on the Sonos forum. If they would be more interoperable I would order a pair of Sonos Ones immediately.