^Watch out for refurbs. I've had good luck w/ sonic. They are much quicker than woofersetc & have better customer service.
Pay close attention to which online distributor you purchase from ...dealercostaudio, cardiscountstereo, onlinecarstereo, etc.... I have had bad luck w/ many of them & so have others.
I'd advise you to stick to crutch, sonic, or woofers. -Just my opinion.