I think the Gibson axle back falls into this category. I was originally looking for the same thing and ended up with a Gibson. You know it is there on cold startup then it mellows out after warm. There is no drone in the cabin at any speed, I have done several 2 hour+ road trips with the family and no one had any issues with it. If you are inside the cabin and rev you hear it a little. While driving if you stab into the throttle, you hear it a little as well. With that said, I just received AWE touring exhaust yesterday. I think I actually want more sound. I may be selling the Gibson if I like the increased sound of the AWE better.