The best thing about quantum control so far has been its ability for easy customization in terms that are not difficult at all - it's very intuitive! I have no complaints yet but if there were any they would be minimal as this program seems like one with great potentials going forward (as long we keep up our end). We use QC mainly because my employer requires us too or else risk losing certification from FAA/EASA etc.. It allows you do everything within your power without having access outside sources which can really save time when working alone especially since most things here need constant attention by multiple people over several days before anything gets done correctly even just once!!