Going a bit OT but since we are talking of cables (sans any controversy) I thought this newsletter from the maverick Mark Baker of Origin Live is relevant and of interest to all of us:
Choosing Hi Fi Cables
<End of OT>
Caveat: this is from a manuacturer of (among other audio stuff like turntables, excellent tonearms, and even speakers) audio cables. So the usual caveat about taking it with appropriate quantities of salt applies.
Caveat 2: long article. Read at your leisure
Cables are sometime over hyped. No doubt. But, they do make a difference.
In my personal experience, allocating 10% of your budget to cables is really worth it. And it is not rocket science to calculate the rolloff caused by cable with the published specs. Bit of attention to capacitance does help. It is one topic which is better to learn by experience rather than review.