Need some opinions on streaming

[rjinaz86323]

I realize this is pretty low end equipment for most of you, but thought maybe you had been there in the past and could offer an educated opinion. Keep in mind my budget is VERY limited (under $1K)

I am getting into streaming music. Currently using Amazon Music Unlimited which provide HD and Ultra HD. My current setup is using a Mac Mini USB uotput to a Schiit Modi 3+ into my MX130. Here are my questions for an improvement in sound

1. replace the Mac Mini with a Bluesound NODE (either using the internal DAC or run it through the MODI?
2. Keep the Mac Mini and upgrade the Schiit MODI to something else?
3. Run a different brand Streamer than the NODE?

Thx