GCPRO Key or GCPRO Box Same thing?

Sorry for my noobness. I currently own the Octoplus box and had some issues with unlocking devices specially with the new roms that came out. I was reading online and seems like this GC PRO Key is the new thing that makes every job super fast and easy. Is it true? I appreciate honest opinions even if its to flame me haha.

Oh and have a blessed 2016.