I think all three are one trick ponies: Country (The South), Christian Rock (God), Radio Rap (Women, Alcohol).
But I went with Country because its artists are the biggest toolbags this side of the world, yes, I am looking at you Trace Adkins, Toby Keith, Tim McGraw, and Big and Rich.
I voted country because I can't stand to listen to any of it. Radio rap is pretty horrible too though. Now that I think of it maybe they're all equally horrible. At least Christian Rock has a good purpose behind it?
It depends on what kind of country for me. For example, Johnny Cash is the greatest American ever. However, I could listen to a local country music station for an hour, and the only thing I would enjoy would be a commercial for home siding.
However, the theologian in my finds most Christian Rock (or really, anything 'Christian' that gets played on the radio) to be more vacuous than ChipWoods. So I voted for that.