I wonder if experience placebo or not, but I have been able to tell the differences in cables for some time. usually its not a huge difference, but sometimes that little extra can bring a bit extra to the listening experience.
I did an experiment once with two friends. One into music like I am and the other couldnt give two bits and felt that we were being weird nerdy people. Used a modi 2 uber with a burson soloist sl and the oppo pm3.
long story short. even the friend who thought we were nerds couldnt believe her ears, because she heard differences and was actually describing the differences between then. and she had no idea which cable was which.
and the price was not a factor. the most expensive cable was actually seen by all three of us as the worst of the bunch. Blue Jeans cable was seen as the most well rounded cable, a cheaper cable was considered a great value for its performance.....
if you can audtion in your system and dont hear a difference then buy whatever is well constructed and meets your needs at a great price and be happy.