I'm on the third day of a 7 day trial. I like it a lot. My experience with the SQ is very similar to Brent. I normally encode at high rate variable and call it good because I determined years ago that my old ears couldn't tell the difference. Maybe/probably* placebo but Tidal is causing me to reconsider that assumption.
* one small data point: the one time I noticed that the music was sounding "normal" (as opposed to really stellar) so I looked and the HIFI symbol was inactive for whatever reason. I assume it was a temporary poor wifi connection.