As the market for Android tablets expands (and it's going to start growing really quickly later this year), then I imagine that a more robust and capable office suite will be developed. I agree that Doc2Go is too limited in its present form to offer a complete substitute to Office.

Of course it's anyone's guess as to when that will be released, how many features it will have, and whether it will be possible to purchase it without access to the Android Market (hopefully that will be forthcoming later this year as well).

But even with better software, I'm not sure that a 10.1" LCD offers enough real estate to do extensive work, particularly with data. I often find my laptop's 15.6" screen to be too small when working with a large spreadsheet.