I have visited quite a few blogs in the last month or so and Daily Kos is the most sophisticated, best formatted blog that I have found.
While visiting several other blogs I found most of them to be a joke. They don't seem to have real diaries like we do here, and most comments are limited to a sentence or two. Kos has done a phenomenol job with the formatting of this site, and most of the diaries and comments are informed and well thought out.