I found the new software package to be fairly decent, and getting the photography SKU means that you'll get full access to the software. They used to gatekeep certain functions based on the level of package you purchased (the base hardware stayed the same) so a lot of folks use an opensource calibration package called DisplayCAL.
displaycal.net
DisplayCAL—Display Calibration and Characterization powered by ArgyllCMS
Display calibration and profiling with a focus on accuracy and versatility
