Benefit is point of view/opinion as its 90% of the stuff on this board. I could say there is a benefit of buying an woofer from Walmart because its cheeper and I can't justify spending $600. That could be a benefit to me. Im just saying that I've heard more quality (again my own POV) systems with smaller woofers, 10" being the most common where I'm from. All of the systems I have heard hooked up properly have never used woofers larger than a 12". Never been to a high end shop where they were running a buch of 15's or 18's for SQ in a demo vehicle. Not saying it hasn't been done just never seen it. And if you have its not usually the norm.