I currently own a ColorMunki. Use it mostly for display calibration of my iMac. I use professionally created paper profiles for my 3880. Because the iMac is not an Eizo, I'm uncertain if a more advanced device like the i1 Pro 2 would be of much benefit in calibrating the monitor.
But now that I'm beginning to print a little more on a 3 year old 3880, I'm beginning to wonder if printer "drift" will come more into play.
Those of you creating custom paper profiles for your printer, how often do our need to re-profile?
Any of you who upgraded from a ColorMunki to an i1 Pro, what difference if any did you notice in your prints when using a profile generated by the i1 Pro over one generated by the ColorMunki?