After getting the JL HD600 hooked up for fronts(stock) and JL 6x9 in the back. Including 2 12w0 in the back on kenwood 1800. Thought at least I would be satisfied for a while. But while using XM or FM it just sounds factory(Blah). Last thing I got was the I-pod.(Should have tried it first just thought XM would be equivalent).
Man it made all the difference. Just louder and clearer. Cutting XM soon as its time to renew.