I'm looking to put on a new exhaust system on my 5.3 v8 silverado 2002 and the places and people I have been talking to said both magnaflow and flowmasters would be the best bang for my buck but both cant come to a conclusion on which is the best and I want the most performance out of the exhaust and I have a less concern with the sound and if there is some better system that would be great to know about but if not which one should I go with or look more into?