I'm thinking of getting a cat back installed on my 156 V6, and don't want to pay through the nose for a Wizard system. I also don't want to create unnecessary noise boy racer style. I'd like to improve the exhaust system, and add a little more fun to the sound. So I've been looking at Longlife cat backs as they seem to be good quality and within my budget. Has anyone had any experience with them? What do they sound like?