Forget Sirius or XM unless you spend a ton of time in the car. You are probably best to invest in an MP3 deck (just my opinion) I have a Kenwood MPV-619 and haven't regretted the purchase one bit.

98' Contour SVT #607 of 6535 05' Mazda 6s Audio/Visual enthusiast because it's one of the many things I went through 4 years of hell for