Input output cable question

I am sure this question came up before.  Can somebody direct me to the discussion here?

Any hints of what I should get for a cable?  Favorites?

I see pricing from $200 to $6000.

I love to buy used expensive cables for more than 1/2off. 

Thanks for the cable suggestions.

To the person stating cables make no difference.  Maybe to you. But I have seen Wow moments in cable changes. So, either you have a huge system with huge (great) cables already or you have a system that cannot resolve the differences.