Time to bring up the taboo subject:
If you're all about listening and don't want anything visual for bias, you have taken a blind or ABX test of Redbook vs. hi-res audio, right?
No. I have not taken any tests. Couple of years ago I decided to consider switching from listening to ripped CD's on iphone to HDTracks hi-res downloads on some more advanced player. I read a lot of user feedback and reviews about various hi-end devices before deciding on Tera player. Have never been happier with any decision (hobby related) in my life.
By the way, my decision making was certainly not influenced by any charts. I read this forum for a while, decided which few very experienced posters seemed to know that they were talking about, and kind of followed their advice.
By the way, the initial decision to look for something better than iphone and CD resolution is because I still remembered that way back during my high school days my vinyls used to give me a lot more SQ satisfaction than what I was getting with ipods and iphones (even when ripped to CD resolution).