How many people spend countless hours swapping cables but won't spend a few minutes working with speaker placement or invest in room treatments?
Cables should be the absolute LAST thing you worry about after EVERYTHING ELSE is perfected. In other words, you should never invest in high end cables unless you have an infinite amount a money or telling your friends how much you spent on cables gives you great pleasure.
buy some cables from Benchmark, or make them, and be done with it.