I had tried out the G1 at T-Mobile stores, but really wasn’t impressed. It has a lot of similar features as the iPhone, but it was a lot less polished and not quite as logically lain out.
Android hardware has gotten a lot better since then. The OS has improved quite a bit as well. A friend of mine has a DROID that was just updated to Android 2.1 and I notice that a lot of the list scrolling (such as in the app management screen) and the zooming in and out in the maps app is definitely not as smooth as the iPhone. The whole Android experience is more complex. It feels more like Linux, which I suppose is not surprising. Prior to buying my iPhone 3GS, I spent a lot of time at the Apple store and at the T-Mobile store trying out both phones.