@hausera - You didn't include the most critical pieces of information which is how you would describe your current sound and what you'd like to gain.
@jasonbourne52 - I don't disagree with you that a lot of audiophile "science" is pseudo science, but that doesn't mean that it's impossible for there to be differences. It sounds like you've made up your mind and have not actually taken the time to explore things in actual practice.
@winoguy17 - I agree with this approach 100%. The OP should find the cheapest way to test some different cables in his system to validate that there's a difference (maybe he already has). Then I'd make sure that any cable that I purchased could be returned because I don't think that a higher price necessarily means better sound. It should with any individual brand, but the manufacturing processes and materials vary enough that I wouldn't expect it across brands.
My personal experience with cables is limited, but I have had an improvement from both a power cable and interconnects in my system. I have upgraded three power cables and only noticed a clear difference with the one on my amplifier (Waudio) with the other two (Waudio and Pangea) not resulting in anything audible to me. I upgraded from Blue Jeans Cable interconnects to Audioquest Chicago ($99) and the difference was significant enough that I upgraded a second time to Audioquest Sydney ($199) that resulted in another less significant improvement. I tried upgrading from my Blue Jeans Cable digital coax to Audioquest Cinnamon and didn't notice any difference. I'd say that the difference that resulted from the cable upgrades was ever bit as significant as what I've heard from tube rolling.