I don’t generally promote other blogs but I found one that debates current issues in unique format. Over at Objectivist v. Constructionist you can find a civilized debate that centers on key values as they are viewed from the respective philosophical positions. I found the Immigration Policy debate particularly worth while.
If you’re looking for something that raises above the general blog-sphere noise, these two gentleman are worth the effort to read. They don’t publish everyday or even weekly but the quality of the thought behind the arguments is worth checking back in for.