tkyong1, Im pleased that you are happy with your system.
In terms of giving a view on how/why the cable sounds different, I'd suggest doing a few forum searches on 'cable' per se.
You will see that its a very contentious subject, and that there have been many recent discussions on the subject.
There are a variety of different views, all of which have been discussed at great length.
Rather than start the discussion all over again, you might want to spend some time in the forum archives.
Again, glad that you're happy with your system and welcome to zerogain.
Chris