I've had a Node 2i since last September, and I use it with Qobuz, Tidal, and to play files over my WiFi from an iMac. In general, I'm very happy. I love the sound I get from all sources (including Tidal's MQA files), but I find the Qobuz and Tidal native apps work better than when accessing either service through the BlueOS app. It's like the BlueOS app is adding overhead to anything I want to do, which slows things down a bit. It also handles shuffling of playlist content *very* awkwardly, and I haven't been able to figure out yet how to get either service to continue to stream similar content after a given album has finished playing. When I go directly through the Tidal app, for example, it does that. Not sure about Qobuz.
Unfortunately, the only way to access either provider's hi-res content is to go through the BlueOS app, so that's what I do. Doing that means the Node is the device pulling content from the web, and it has full access to the hi-res stream, whereas using the Tidal or Qobuz app means my phone is what's pulling the stream from the web, and passing it to the Node via AirPlay, and it's my understanding that AirPlay is limited to 16/44.
The one other area where the Node doesn't shine for me is its inability to "see" files that aren't stored locally on my iMac's internal drive. My entire iTunes library is on an external, due to its size, and Bluesound has acknowledged that while their software will allow the Node to read files on a server's local drive, it can't when the files are on an external. They haven't said (to me) if that's something they're working on or not. So for now, and possibly into the future, if I want to play anything from my iTunes library through the Node, I have to do it through AirPlay, using my phone's iTunes Remote app to choose the music, and push it to the Node.
So all in all, I love the device and the sound quality it's capable of. I love the content from both services - they complement each other nicely, and between the two I can almost always find what I'm looking for. But I'm a little disappointed in the BlueOS app, and in the limits of the device's network abilities.