you live in hoover alabama. AT&T decided to invest there. enjoy it. T-Mobile is investing where they will make the money back. upgrading all of those edge spots is not cost effective. I don't blame them for doing that. you can't please every customer. when I travel I hardly ever go below edge service which is just fine with me. T-Mobile is running a business. and right now that means pushing HSPA+ while pushing HSPA+ devices. that makes them the most money and keeps them in business. something that AT&T is trying to get going, but not having much luck with.
Have you modded the phone and flashed a custom rom and Android? I have both HD2 and G2. My HD2 with Android runs just about as fast and most new Android Phones. The screen and video is a lot nicer and any iPhone. The Retina display is over sold and is not noticeable to most people.