Get ready for 50 opinions on what mean sounds like. Some people like deep rumble, some people like it raspy. I've tried a zillion combos and for my money it's hard to beat Magnaflows with an X pipe. They may not be mean 100% of the time and you won't look obnoxious...but it definitely sounds like you mean business when the throttle is opened up. If you want it more obnoxious more of the time, go with Macs and an X. If you want it all obnoxious all the time, Spintechs with an X are good...or just about any tube style muffler.