I have a Corsa DB system on my JK & it sounds awesome!! I love the way it sounds when you first start it up. It reminds me of a motorboat in the water, it kind of burbles when idling but when you step on it ,she really barks. The Banks Monster system that I installed on my wife's JK a few days ago isn't very loud at all,especially at idle. But, it's a brand new system so maybe it will have to break in a little bit & hopefully get louder. I paid $359.00 for her system on Ebay. I bought my Corsa system used from someone here on this board for around $300.00. I think they are over $500.00 new.