Not really all that complicated folks. High-resolution audio has been around for over a decade now. A lot of albums that are released on DVD-Audio use this format. On the HDTracks website, you can download the albums (like MP3's) to your computer in several different formats (FLAC, WAV, AIFF, ALAC). You can listen to sound samples and judge for yourself. While it's perfectly fine to stay within your comfort zone, there is nothing wrong with being a little open-minded either.
Here's the link to McCartney's albums: https://www.hdtracks.com/index.php?file ... il&id=9433