The DP0 Quattro has a better display than most digital cameras of this age and type. This camera has a TFT display, whereas most digital cameras that are a comparable age to it have an LCD display. TFT LCDs provide better image quality and higher resolutions to earlier LCD displays but their limitations are narrow viewing angles and poor vislibility in direct sunlight.
This camera's display (TFT) is actually the best display amongst all cameras of this age and spec.
An LCD display is the worst display amongst comparable types of camera.