I got documents ToGo. It has more features that I use, such as bulleted lists. Quick office HD doesn't have all the features as the normal version right now either, so if you do decide that one, you may want to wait for an update.
Just plugged in an old Dell USB keyboard my wife uses when she works remotely and the response time on the device is phenomenal! Anybody using a Bluetooth keyboard with the tablet by any chance? If so, is the device as responsive with Bluetooth as it is with USB?