Again, if you are happy with the results, however they get into the brain, real or imagined, then just sit back and enjoy them.
It's your money to do with as you wish.
I'm sorry Steve, but I'm going to have to chime in here. That's the second time you've made the "real or imagined" comment, and I find it more than a little patronising to those who do hear differences between cables.
The sum total of your experience cannot exceed stating that theoretically there should be no difference, and that you personally heard no difference. That's it. You cannot extrapolate beyond your own findings to pronounce that no one else actually hears differences.
George