I have been having a great time with my NEC 3090 and the Spectraview software together with my Eye-one Display II older version colorimeter, using the Automatic setting where SpectraView determines whether to use the factory values for the primaries or not. Since I use a viewing box with dimmable brightness, the prints I get with homebuilt profiles from my Z3100 are close enough for jazz, so to speak.
I do have one question, though. I calibrate and profile the monitor monthly, using D65, 120cd/m2, gamma of 2.2, Best Grayscale, 32 steps, extended stabilization time and the setting for luminance uniformity. On the first run, I get a Delta E of 1.5 or so with the White Point, a luminance setting of as low as 117 instead of 120, and a Delta E of greater than 1 in the color accuracy. I know these are acceptable values, but I find that if I then do a second run, all of the differences are much, much smaller. I have experimented many times with the same results. I always do the calibration and profiling after using the monitor for a couple of hours, so I know it has nothing to do with warmup of the monitor. Could the colorimeter have to warm up by being used? I can't think of any explanation for this other than chance, but the differences are always in the same direction.