The first thing I would note is the software. The application that comes with the Spyder 3 is a notable improvement over previous versions, and in my opinion a good deal better than X-Rite’s package. Calibration with DataColor’s latest and greatest is about twice as fast as with the Spyder 2 software, and now has an option to simply check your last calibration instead of doing a complete recalibration every time, making regularly scheduled checks that much quicker.

Next thing to consider is that while both devices measure ambient light, the Spyder takes this a step further and allows you to calibrate projectors, even including a tripod mount for this purpose. Admittedly, I have found projector calibration with the Spyder to be rather touchy and sometimes frustrating, but a difficult process is better than none at all.

The hardware between the two colorimeters is roughly equivalent, and neither will leave you hurting. That said, in my experience the Spyder tends to measure shadows more capably and give a better neutral gray, compared with slightly warmer colors from the i1Display.

In the final analysis, though the Spyder has its quirks, given the choice I would choose it over the i1Display or its other main competitor, the Pantone huey Pro.