I‘m kinda stuck with Tidal, being used to it and having a huge collection.
Nevertheless, I’ve noticed the switch from CD quality to MQA without knowing what’s going on.
A/B comparisons with the original CD (hardware-) releases confirmed a sound degradation.
The (upsampled) pseudo-HiRes does not reveal any advantage.
Might be different with newly produced real HiRes material, I can’t comment on these.
Of course good music and good recordings exist in every format, thankfully.
Meanwhile more and more streaming tracks are replaced with “remastered” versions, usually not to the better, so I tend to listen to CDs more often now.
This is not the fault of the streaming services, but the record label’s who think they will sell more if they squeeze out the last bit of loudness until there are obviously annoying distortions, in favor of quality.
Loudness war isn’t over, it’s worse than ever.
BTW: there’s no difference between the various streaming services in this regard, they all have to publish the same versions.