A lot of audio dealers have demo sets (likely burned-in) for try out at home which should show you what they'll sound like after burn in. Easiest way of comparing cables and another reason why dealers are an invaluable asset.
Why Aren't All Cables Pre-Burned In?
Most folks don't buy enough cables to justify their own cable burner. Yet, many cables take 2-4 weeks to burn in. This makes it very difficult to compare cables (did I just answer my own question?). Why don't manufacturers burn them in so you can tell what they sound like when you unwrap them and plug them in? Does the burn-in go bad after they sit on the shelf for a while? If so, wouldn't the second burn-in be quicker when you brought the cables home? I don't get it. Help! Thanks in advance. Hey, maybe some cable companies are out there listening.