I just recently bought an NEC P221 monitor the other week and am overall pretty happy with it. I just purchased the spectraviewII software online and ran some tests. I share an office with another photographer and we both have gretag macbeth eye 1 display 2 pucks. I was curious to see how each puck calibrated the monitor using the spectraview software. With that said, the pucks give a very different contrast ratio and delta E value, from looking at the attached summaries, does it look like one of the pucks is broken or more accurate?
To my eye they both look odd - all P221W I had calibrated (about 6-7?) had R,B colorants pretty close to AdobeRGB R,B colorants.
I suppose it's a general problem with an i1 colorimetrer, that doesn't work well with wide-gamut panels.
Check "Factory measurements" in Edit>Preferences>ICC Profile>Source of primary color chromaticities for ICC Profile. It would also be perfect to calibrate the panel with i1pro, ColorMunki spectrophotometer, or custom NEC colorimeter.