Recommendations for good sounding streamer

I'm partial to Cambridge Audio streamers.  They are a bit more expensive (around $1,100), but are very versitile in terms of connection options.  I have an Azur 851N that I use primarily to play purchased music from a hard drive, but it also has support for Spotify, Deezer, etc.  I love how it sounds in my system.   My son has the CXN V2 and is very happy with it too.

Another vote for the BS Node. I have a Denefrips Pontus ii on order and look forward to running the Node through it to see what happens. Mostly I got the DAC for CD sq. 
I stream Spotify for the same reasons mentioned. Note that you can select your sound quality in the Spotify setup menu. At the highest quality (and bandwidth) setting, I hear little difference vs Tidal. Sounds very good. Once the DAC arrives, perhaps that will change. 

For Spotify quality, utilizing your V90 DAC, the simplest, most inexpensive, expedient solution is a Wiim Mini. I use it in a 2nd system over WiFi with Qobuz at up to 24/192 into an external DAC through optical, controlled by the iPhone app. The interface is adequate, the setup is easy.

I do like the Bluesound app better. The Node also has a much better internal DAC than the Wiim so it may not be worth the trouble of connecting the V90. It also has more connectivity options for external DACs which might be helpful if you later decide to scale up. 

I’m assuming your home WiFi is decent. You can hardwire the Node. I don’t because WiFi is more convenient for me, and the little LED showing the connection was bright enough to annoy me.

I’m sure there are better sounding solutions, but either of these is a good start.

I used the blue sound for a couple years and thought it was a bargain 

very reliable and reasonably good sound quality 

underrated DAC

Given how good their DACs sound, I'd be curious about the HoloAudio streamer: