What Anomaly is trying to say is the sample rate appears as a stair step but this is miss-interpretation of sample theory. This is explained in the link I provided.
This is a good article showing the problems with jitter and errors of CDs and how they affect the sound, or don't as the case may be.
http://www.stereophile.com/reference/590jitter/index.html
People feel you need higher and higher it rates to make the music sound closer to Analogue, this is not true. The human hearing range spans 20Hz to 20kHz so why bother with files that go way beyond what the human ear is capable off? There isn't any, plus in most instances the frequencies can be counter productive to sound reproduction introducing artefacts etc. This is again explained in the link.
Now in another thread I've sung the praises of HD audio and preached its vinyl like quality and after reading this previously linked article telling me I was wrong I wasn't sure what I was hearing was a placebo effect caused by my need to have it sound better. I can however say that to my ears HD audio does sound better to me than a CD and much closer to what I hear from a record, so close in fact I can't wait to get a new deck rigged to my new HiFi and play 4 different versions of the same album and see/hear what is going.
Blind tests will give you a good idea of what people think of a sound reproduction but regrettably there are too many variables to make it fair to both formats. I've heard records being played on some of the best turntables and into high money systems to some of the worlds best speakers, like Omnis at an audio show and local dealers. These records have such a low noise floor and are so clean in presentation you'd swear they were a digital source. The thing is, even though it had the benefits of what digital brings (low noise floor and no pops and clicks etc) it was still inherently analogue and sounded nice and smooth.
I believe there are people who listen to enough music and they can tell, this is then a burden because your analytical mind doesn't switch off and can just ruin a relaxing hour or two of music. This isn't down to having superior hearing but down to hours of studying sound and listening to music. My sound production tutor at uni had amazing ears from his years of experience and really was amazing at his job, but he couldn't enjoy music anymore. This was his first statement made to class when we started, to point out that unless you look for the mistakes and poor audio engineering in your work others will do it for you.
Back to topic.
I also buy physical copies of movies and TV shows, because like Moglet being in the UK sucks with internet quality and speeds, streaming isn't an option and downloading a movie from say iTunes isn't going to happen quickly so isn't a real option for a spear of the moment thing.