That munki is a spectrophotometer, the OTHER munki is a slow version of i1DisplayPro colorimeter (without HW calibration support)
Hence you are comparing a 10nm spectro (1) with a colorimeter (2).
Apples and Oranges, but if you are asking people on this forum I’ ll buy:
-both of them
-i1displaypro & i1pro2
in this order of increasing budget.
If you print on your printer you need (1).
For current displays (2) is faster, read better low light and most current backlight technologes are supported by vendor/community CCSS… so if you can buy ONLY 1 device without knowing more details of what you do, most people will be happier with the i1DisplayPro (2).