any suggestions on what to replace Bluesound Node 2i with


I am doing a major upgrade on my home theater system. I want to upgrade my streamer. I can spend around $4500 if I have to. My dealer played a Lumin T2 and the music, Tidal, sounded amazing. He said I would be okay with the D2 if I wanted to save money
Any one have any experience with the the Lumin's. I am open to other streamers, it does not have to be Lumin. Thanks 
galleybob
I upgraded my Node 2i with an interface card + linear power supply. Made a big improvement, but don't know how it compares to the others.
Some say that there are implementations of the Raspberry Pi that are better than other options. Anyone find that, counterintuitively, the way to improve streaming is to spend less money on a Raspberry Pi?
Innuos Zen mkIII or Zenith mkIII. That is the upgrade I did last year. I went from a Node 2i to a Zen mkIII. The Node is a great piece for its price range, but the Innuos Zen is in a whole different class. I loved it so much that last week I sold my Zen and went to a Zenith. Watch John Darko's review of the Zen.