CD's or Vinyl?

Without any hesitation, CD.

And not only because of the SQ... changing from one side to another every 20 minutes, no thanks... It's true that a few very well recorded LPs may sound more realistic than the corresponding CDs, but this is not a typical situation at all.

@mylogic , If the cracks, dust cleaning and  demagnetizing LPs does not bother you and you can completely concentrate during 20 minutes of listening, and if you have a super TT and really well-recorded LPs, then you will have an advantage in listening to these LPs over the corresponding CDs. But bear in mind that for the most of the classical rock and even jazz and classical music LPs, the corresponding CDs sound better defined. 

@mylogic , I like your remark to "live with imperfections" (I am often envious of a stamp whom I see in the street). The less we depend on our environment, the better for us. Though, if the windscreen of your car has too much of dirt, you won't be able to drive, or you will need to lower your speed to an inconvenient level.  

When I miss the analog sound, honestly, I prefer to use of type deck, which sounds really nice on many of the cassettes that I have. I can't really say that the LPs I have sound better on the turntable that I have. 

@mylogic, I agree that cassettes are good alternatives to LPs. The only problem I face now is the maintenance/repair of  type decks (also that of cassettes). The Pioneer CT-F1250 that I bought used is a completely wonderful deck, in both, the reproduction and recording, but when it works properly. If failed some time ago but after some cleaning it recuperated, however, it started to fail again. The mechanics, fast-forward, rewind,  were too weak from the beginning. Finding parts and repair is a problem. I have also Nakamichi CD2, one of their latest models, it works properly. Sound reproduction and recording are ok but just incomparable with the Pioneer. So, it makes not much sense to use it. 

@billpete, You may still try to stream with the autoplay on. Take your favorite group/musician, once the reproduction is complete, Tidal, at least gives a nice selection of "similar type" of music. I thought that the blues was dead, but thanks to the steaming, I learned that there are young good bluesmen, similarly in jazz (unfortunately,  the rock seems to be basically dead except that some old guys still continue to produce, good examples are Robert Plant and Ian Anderson (pity that  Ozzy Osbourne just passed away). 

PS I just auditioned two well-recorded cassettes on the (properly functioning) Nakamichi deck, Thelonious Monk XDR on Blue Note and I am still listening to Pat Metheny's Secret Story, comparing to the CD  version via streaming on Tidal. Streaming has a bit more defined sound reproduction but also brighter and more agresive, while the deck gives more peaceful and softer sound (a rough comparison, SS vs tube sound). The current setting is with a tube amp.

Which one do i like more? Honestly, I enjoy more the cassette, and this with the Nakamichi (with the Pioneer, which does not now reproduce well, there would be an even more clearer cassette preference). 

@mylogic , Thanks indeed for the suggestions, I'll try to get deeper into it. My main concern with the Pioneer deck now is not the fails in ff and rev  (which one can still tolerate), the problem is in the playback, the sound is dull with a very narrow frequency range. This happened also before, but typically, after several tries the reproduction was getting normal. The Pioneer is also direct drive, like your Tandberg - I'll try to check the belts and sensors, and probably the motors you mentioned also need repair/substitution.