According to Mashable, a Yankee group study found 73% of iPhone users are very satisfied with AT&T.
This does not surprise me as my iPhone seems to work really well most of the time. In addition, it has performed well on most of my business and pleasure trips. When I hear it does not work well for many prominent bloggers I believe them. However, just because the phone does not work well in a few cities, doesn't mean it performs badly in all cities. I think the AT&T haters are in the "distortion field" not most of the actual users as indicated by the study.