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.

@niodari 

Interesting hearing points.

I think you nailed it with your valid answer as asked for by the OP. You have put in perspective what the original question was all about, but have clouded the water so to speak.

Your quote…“It’s true that a few very well recorded LPs may sound more realistic than the corresponding CDs” Very useful information for those on the fence.

From my perspective, it doesn’t bother me having to change sides every 20 minutes. What is most important is the sound quality, not an inconvenience.

lf anyone owns a lot of really well recorded LPs, and are not bothered by the inconvenience of 20 minute turnovers…. then analogue, with it’s potential (as mentioned above) “can sound more realistic”, is arguably the winner over digital

If you would have asked me a year ago I’d have answered definitely CD, but I actually heard a system with a newer TT and clean records.  Sure there was a click or two, but the sound was surprisingly good. TT, arm and cartridge all together maybe in the $1200 range and the other equipment was vintage. 

@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.