All one has to do is avoid the "grass is always greener somewhere else" syndrome.
When you find a cable you like. Stop.
Only folks selling cables want you to keep searching for the 'holy grail' of cables..
I could care less if 'maybe' some other cable might possibly sound better. I am satisfied with what i have.
Gee not neurotic abour cables? how can that be.. i must not really be an audiophile?
Personally if you are not happy with your system's sound, no cable is going to fix that.
On the other hand, if you love the sound of your setup, a good cable might make it even better. though it also might screw it up. Who knows... So i say be happy with what you have...
(Obviously i have no interest in selling you a new cable!!!)