ColorMunki Photo is a Spectrophotometer and while an excellent device, it's not going to measure very dark emissive colors as well as the NEC branded, X-Rite built Colorimeter can do. In terms of software, you absolutely want to use the SpectraView II software, NOT the X-rite software to calibrate this NEC display! So yes, you want to drop that $99 and sure, use the ColorMunki Photo knowing that their colorimeter will do a tad better job measuring dark colors from the display.