For those of you in the Milwaukee, WI area (or, really, anywhere in southern WI), what have your experiences with Cingular been like as far as coverage, customer support, phone quality, etc?

I have a month and then I'm thinking about switching to a different carrier (from US Cellular; great coverage, awful phones), and I have a few people I know with Cingular. Most are good reviews, and some are terrible; I figured I needed a larger sample.