It's all very well saying a person needs to go and demo etc, but there are some instances where doing so is pointless.
For example, I don't care how many home cinema buffs tell me that their £200 HDMI cable makes blacks deeper and motion better on their big HDTV, I know that that is simply not possible, so I wouldn't waste my time.
I also know that no digital cable - no matter how much money it cost - or what any expert reviewer may have said about it - can make sound quality better, or worse, or different in any way to another digital cable, so again, I wouldn't waste my time.
No method of digital data transfer can improve sound quality either, and no method can degrade it in any way that doesn't cause an obvious failure, so you can't get more clarity, a wider soundstage, or better dynamics from using one form of data transfer over another, so again, I wouldn't waste my time.
What I would say is good luck to anyone who chooses to believe differently, if they trust their ears and so deduce that the above isn't reality for them, and that makes them derive more enjoyment from the hobby, then happy days.
But please don't tell me that I need to suspend reality, and go listen for non-exsistent differences so that I'll have more experience. I don't need experience of listening for something imaginary.