Who has tried "TIDAL" vs other streaming applications?

Damn spell check. Meant "Roon".

With my system, I can clearly hear the difference Tidal HiFi vs High, but if someone changes my setting secretly, I have little confidence if I can detect it . lol.

A minority opinion here, I suspect.  You can attribute it to what you will...inadequate gear, the wrong set up, old ears and degraded hearing.  Just spent a good amount of time over several days of a "free" 30 day Tidal HIFI trial A/B-ing tracks (and small sections of the same track) on Tidal vs Spotify Premium.  Took pains to get volume levels the same (RadioShack SPL meter). Listened on the main system with Gungnir DAC (not Albert Porter's but good enough to hear cable changes and differences in various issues of an album) as well as headphones (Senn 600/AQ Dragonfly/Asgard 2 amp).  Based on enthusiasm from the Tidal fans here and elsewhere in A'gon, was expecting a night and day difference.  Personally, I was underwhelmed.  I thought I might have heard a tiny, tiny bit more hi end, separation, and density to the music but emphasis on tiny.  Switching back to the same track or section on Spotify Premium and that "remembered improvement" evaporated in a second.  It wasn't like the sound stage shrank or high end started sounding rolled off accompanying a noticeable degradation in SQ..  I doubt I could pick out Tidal vs Spotify in a blind test.  So FWIW, that's my story.  Was really hoping Tidal would bring a step up change in sonics but it didn't for me.  Cancelled the trial.  Saved myself $20/month and kept Spotify which I find very satisfying.  Happy listening to you in which ever format you choose.  

Ghosthouse - you were unable to hear the difference between spotify premium, at 320 kps, vs Tidal, at 14,400 kps?  I hope you had Tidal set for hifi.

cerrot - I thought any difference between Spotify Premium and Tidal HiFi two was tiny and not something I’d necessarily be able to pick out in a blind test. Now, Tidal HiFi vs the "free" non-premium Spotify? - sure that brings a definite improvement.

Re was Tidal set for HiFi? YES, it was. Paid (gave security) for a Tidal HIFI trial, confirmed things in settings and noted the HIFI indicator at the bottom right was "lighting up" when playing a track. The bit rate numbers look like they should make a big difference but in my experience, they didn’t translate to a significant improvement in SQ. Believe me, I would love something that delivered a step change improvement in sonics and was hoping Tidal could provide that. While maybe a minority here and elsewhere, I did find another comment (at HeadFi) to the effect, "Spotify Premium does not give up that much to Tidal HiFi". That would certainly be my conclusion too.

Now...I’m no computer genius but I’ve been learning by trial and error. I do use a Musical Fidelity V-Link 192 USB/Spdif converter that upsamples to 192Hz. Do you think that might "narrow the gap" between the two services? I know up sampling comes in for criticism by some. My experience does have me wondering what the excitement with Tidal is all about. Maybe the tiny improvement I thought I maybe heard is the basis for that. If you have some insight, let me know. Either way, Tidal OR Spotify, it’s great to have access to such vast libraries of music.

BTW - the MF VLink 192 is only on the big system. With headphones do use an Audioquest Dragonfly v1.2. That will upsample to 96Hz. Not a huge difference from Tidal with cans, either.