What is your frame?

So I have started the all important search of looking for a camera upgrade. Yes the thing that all photographers either look forward to or dread... Getting a new camera and having to learn the layout. I am currently trying to upgrade from my current D80 because it has a poor ISO rating and is a DX crop. To those who do not know the DX crop is the normal sensor size for Nikon cameras which is approximately 3/4 the size of a full frame camera which would not be restricting to most people but those of us who take photos for a living the full frame is the best choice. Here is an article I was reading about the differences this morning for anyone else who has been thinking of upgrading and is not sure if it is really worth the extra cash for the full frame.

One day this will be my back up after I upgrade.