>Throughout the history of photography, the larger the imaging >media (plate, film, sensor) the better the image. 35mm was >better than APS, medium format was better than 35mm, large >format was better than medium format. FX is better than DX.
I'm not sure that logic applies to digital in the same way as film.
In olden days (up to the 1980's...!), we were using basically the same film stock - with the same grain characteristics - in each format. The larger the negative, the better the image, and when film technology moved on, the improvement applied to all formats.
With digital, however, the sensors can be different - in design & density - from camera to camera and may not be directly comparable between DX and FX.