I am thinking about getting some of the Spintech Sportmans for the street. I am wanting to get some feedback from you guys who are running them. Are they quiet then loud on WOT?

Are they too loud at idle etc?
I currently have Flowmaster DeltaFlow 40s. I am getting tired of the tinny sound and they are kinda of loud.
I guess I'm looking for a different sound.
thanks,