New to Streaming RPI4 and Hifiberry DAC + DSP


So I finally got this thing working. Using Volumio I could not get the RPI screen to work, but disconnecting no issues. Currently listening to Volumio radio until I choose a source- Amazon HD, Qobuz, Tidal or ? I haven't seen Pandora as a choice in the app and not sure they have lossless. I know everyone has an opinion, but curious if anyone with a similar set-up has any advice?

If you are curious, rest of system #1) Vandersteen 2CE,  vintage Mitsubishi DC7 amp, Mitsubishi DA-7 Pre. Most likely streaming to this one. System #2 is Thiel CS5's, EAD CD and DAC, LSA Signature integrated amp, various decent cables.
128x128ovinewar
Neither Pandora nor Spotify has lossless files as an option, at least not yet.

In choosing among Amazon HD, Qobuz and Tidal I would recommend you do a free trial of each, even if that means initially listening to lower resolution files. Their music catalogs are different and, just as important, you'll very likely prefer one interface over the other. 
Hooked up to Tidal first since 5hey had a student discount and I am a lifelong learner. Made the price right. Lots of rap and pop. May not be my cup of tea. 
I switched to Qobuz from Tidal for that reason. I use a raspberry pi4 as a roon endpoint.
I use Qobuz and have been very happy with their service, music collection and sound quality. I also use a RPi 3+ with a HiFiBerry Digi out for streaming both Qobuz and my own collection. I use the LMS server program for music management.