Went for the trial subscription on TIDEL.(not title) and the jury is still out. Different songs,same artists and a LITTLE better sound I think. 28 days to go on my free period. I also use Pandora and Amazon Unlimited.
lovinthehd said it already, but doing the free trial subscription on Tidal and comparing it to something you know is a good way to tell if its worth it to you. I can tell you all day its worth it to me, or not, but what matters is if you can hear a difference that's worth paying for.
I did the 30 day free Tidal trial and ran it against Spotify premium in my music room for 2.1 listening. There are differences between the catalogs on the two services and differences in the apps/features. But, the critical area is the listening and the sound. Did the Tidal claims hold up? Worth the difference?
After 30 days I turned off the Tidal. It got to the point I couldn't tell which was playing, Spotify or Tidal. No difference to me at all. Except, Tidal was 2x the cost.
YMMV. Caveat, Caveat, Caveat.