I think the XM sound quality blows. I have static on some chanels and not others. Its no where near CD quality so I can't crank it up without distortion on most chanels. I am running an AUX input on an Alpine deck in the boat using the standard car XM mag antenna. I'm wondering if I need a marine antenna? They are big and ugly so I would prefer the low-key car type. Anyone else having SQ issues?
Either antenna should work the same, don't sweat it.
I am with you on the quality. I turn the wife's to local FM sometimes and the quality blows the XM away. I always attributed it to the stock deck (GM/Bose POS) but since you run it through the AUX in an Alpine and hear the same thing I do, hmmm. I have been teetering on adding the boat part, but I don't think I will. I am not happy enough with the sound quality.