Just thought I'd see what kind of results you guys have seen. I found them both at the same price too. I also have a custom shop in my area that mandrel bends. None of them seem too loud and I haven't heard of any droning complaints. Quality of welds or stainless steel differences? I've always been one to believe any change you make to the intake or exhaust needs tuning to make use of that change. I'd rather wait on tuning until Superchips and SCT's stuff is readily available and tested.