If you have a need to measure color reflectively, ambient light, build printer profiles, go with the ColorMunki. If your only goal is display calibration, a Colorimeter like the i1Display Pro is a better, lesser expensive way to go than a Spectrophotometer like the ColorMunki. The i1Display Pro will read darker emissive colors more accurately and is currently state of the art in terms of Colorimeters. There is even provisions for updating the filter matrices (we are waiting on X-Rite to provide a path).