I'm partial to whiteboards for early mockups and tablets for digitizing more final mockups. I don't really see much value in using a tool like this for early mo

I'm partial to whiteboards for early mockups and tablets for digitizing more final mockups. I don't really see much value in using a tool like this for early mockups. You might as well use a real designer like Visual Studio, Flex, Blend, etc. and go to prototype stage if you are going to spend that much effort laying out controls.