postmodernism

I'm planning on buying one of the following apologetics books because they discuss various different subjects that are contemporary. However, I don't know which one of the two to get. Has any one read one of them or would anyone like to give an opinion on them to help me decide which one to buy...

One of the things I see being thrown around the blogosphere is the idea that postmodernism isn't relativism at all. It seems the Emergents have caught on to this argument and are beginning to move away from that thought, combating it and claiming that postmodernism is anything but relativistic...