Hi Jbatlanta,
I have limited experience with speaker cables. Since having Monster Cables from about 30 years ago, I have tried 21 foot runs of:
Signal Cable (a verrrrrrrrrrrry good value).
Purist Audio Maximus Rev.B (Good sound, limited depth)
and now:
PS Audio X-Stream biWired. These cables are doing everything I wanted, and the price is right!
I'm sorry, I don't have experience with the TMC Gold, and can not make a direct comparison.
The PS Audio X-Stream cables are cheap enough that you don't run a big risk if you don't like them.
Best of luck,
Mark