The only answer is to try it yourself. Some people hear a difference, some don't. Don't waste your money because of what someone else says they can hear.
There are a couple of ways to approach this. One is buy a new cable from a company with a good return policy. Another option is to buy used. If you shop wisely, you can resell it for about what you paid for it. (New cables subsequently sold used take a BIG hit on their price.)