I can’t say for sure in comparison to other plugins. What I can say is that maybe the Harrison plugins work extra good in Mixbus, adaptive, in the mixer channel strip view, but cool thing about that is I’m pretty sure you can also customize the quick view for any plugin in the mixer view, so shouldn’t be an issue that way. Honestly, everyone is different with needs, but short advice would be, check them out, watch the videos on them being used (with phones on) they have some great videos at Harrison! if you need or like them, go for it, if you don’t and have others you like to use, maybe skip it. You can always take advantage of offers later to add plugins.
Hope that helps.