Where do you go after a BlueSound Node 2i?

Well, you already made a purchase, but for any others in a similar position... I’d point them to start with Chord Mojo. I know, not 100% ideal for desktop setup, but $-for-$, man what a great sound. And will let you know if a used 2qute or new qutest are a sound you’d like down the line. AND a great option if you want to dip your toes into headphones/IEMs for traveling.

But in the end, take all advice here as a far distant 2nd to your own ears and preferences. No shortcuts to happiness beyond figuring out what that means for you, within a certain budget envelope.

Do all of these streamers work with Amazon HD? I am streaming with a $40 Tao Tronics blue tooth receiver, which works ok but would like to improve the SQ. I would like to stay with Amazon HD.

It amazes me how people start a thread and then buy an item before they have received all the feedback from the community and then complain about the audience not following the thread closely enough. 
For others who might be interested in this topic - I was recently in the same boat though I had a Node 2. After considering a bunch of different DACs I dove in head first and bought a Mytek Manhattan and could not be happier. I had planned to buy just a DAC with no streaming capabilities but Mytek was (probably still is) running a special where they have discounted the DAC by $300 and thrown in the network card for free. On top of that Mytek made a donation equivalent to 10% of the purchase cost to charities on the frontline of the pandemic in NYC. I also liked the idea of supporting a small domestic business during a difficult time. 
Regarding SQ the switch from Node to Mytek wasn’t small - it is night and day. The extension on both ends, the presence, sound stage, are amazing but above all was the clarity. I can’t tell you how many lyrics of songs I’ve known for decades I now know correctly (think REM, etc). A bunch of songs that have backing lyrics that I hadn’t realized were there - even being able to count the voices. 
I started by using the Node streamer via coax and that was good but the network card is better. Surprisingly I’ve found, at least for Tidal, I like the MyControl Connect HD interface better than Blusound as it gives me ready access to MyMixes and the Artist Radio Stations I was never able to locate using the Blusound interface. 
The Mytek Manhattan is a big step up from the Node (~10X $) but to my ears well worth the cost. 

I went from Node 2i to Lumin U1 Mini into Benchmark 3 HGC. Big improvement.

Find an external dac to use it with for the Sonic upgrade or merely just  change that you are looking for.