You can spend your money anyway you like if it makes you feel better. Pretty much that is all you are going to get.
The end port controls the speed not the cable. The cable either can pass the traffic that fast or it can not. cat5e is rated to 1g. You would only need better cable if you were running 10g which is not really available on consumer devices...partially because of bottlenecks internal to even the CPU in many machines.
Reduced crosstalk and many of the other magic number cable manufactures throw around and to scare people. It is like the insurance salesman that will sell you hurricane insurance even when you live 1000 miles from the ocean. Unless you have a very special problem it makes no difference.
Unless you are running the cable in the wall you are wasting your money to buy cat6a as "futureproof". By the time 10g is common in pc the patch cables will have come down in price a lot.
But if want to buy cat6a patch cables so you can brag to all your friend you might as well go to cat7 so you can be even better.