I have been using Android 2.2 on my Motorola Droid for a couple of weeks now. It seems like a solid and responsive update. It has added features and functionality. The main feature of 2.2 that I wanted was wifi hotspot capability. Sadly the Droid did not get that feature so I am bummed. Android is steadily improving. It is an open and flexible OS. I do miss the UI Polish and games on the iPhone though.