I just purchased a Node as a possible replacement for my Sonos Connect. I have a trial period of 30 days to try the unit with the dealer I bought it from, and will be giving it a couple of weeks before making my decision, but I do quite like the piece. It does sound quite nice and has been working well on a wired Ethernet connection. The setup was a bit quirky, as someone brought up, in that it directs you to connect by wifi first - although there is a small print bit stating that you can optionally just hardwire it. I had to go through the wifi setup a second time to connect properly but it has been rock solid since then. The app on my iPhone has not crashed and works smoothly, but I would say it is "ok" rather than great, being a bit lacking in some respects. It is perhaps overly simplified with minimal options - though this can be a good thing. My personal pet peeve - and I'm probably being a bit neurotic on how much this bothers me - is the lack of scrolling titles - or some way of viewing long album/song titles. It renders large portions of my library hard/impossible to interact with. When Sonos updated their app, they lost this ability and it progressively irritated me to the point that it is literally the tipping point that motivated me to consider bailing on Sonos. That being said, it sounds like they are actively working on updating/modifying the app so I would expect to see some changes. As mentioned, they also have an ID tagging issue in which all the artists on compilation records show up in the artist list. IMHO, they really need to reference JUST 'album artist' in the artist list. I think Sonos has an option to choose whether compilation album artists are listed, and Bluenote needs to do this. I have hundreds of compilation records, and this makes using the artist list massively cumbersome. They claim to be modifying this in future updates. One thing I do really like is the addition of a "Newly Added" page, something which I always wished Sonos had.
I have not heard the speaker yet, though it receives rave reviews. I do wish they had an equivalent of the Play:1 or Play:3 even, but I would expect to see additions to their product line down the road.