A good variety of choices but having had Spotify on a high-end monoblock tube full range system, you should benefit by giving Tidal and Quobuz. I'm using both and like the fuller sound detail on a system that eats it up.
I would also second the recommendation of the RME ADI-2 at $1100. Although I don't have one, that's the one I have my eyes on to couple with Audirvana 3.5. I want to upsample DSD as I caught a whiff of that.
So, please do give a trial run of Tidal and Quobuz so you have that benchmark prior to making any hardware change.
Enjoy the music!