Before I purchased my NEC LCD2190UXi, I called NEC to ask about the Spectraview option where they supply their own profiling software and a colorimeter. Unfortunately, they confirmed my suspicion that the package would only work on NEC displays, and I also need to calibrate my wife's iMac, my iBook, etc. That's what pushed me to upgrade my ColorEyes Display software to ColorEyes Pro, and purchase it as a bundle with the X-Rite DTP-94, because now I have a package that can calibrate and profile just about anything I can throw at it.
People like Andrew Rodney have given the nod to the X-Rite colorimeter as the best around, and the fact that it's been discontinued as a result of the X-Rite/Gretag merger means that it's still available at a discount. The hardware/software bundle at Integrated Color is only $325, roughly equal to the premium that both NEC and LaCie charge for their profiling solutions on the 2190UXi panel, but the bundle provides a much more flexible solution to my way of thinking.