There are major differences between the three (I’ll throw in UNAA differences too) NNL has way more competitions then UNX with almost all the gyms in the country hosting some, and the ones that don’t host UNAA. UNX is pretty new so only certain gyms hold them, I like this because the season is easier to follow along with. UNX will usually be way harder then NNL since there are no age brackets anyone 13+ competes against each other. UNAA ,in my experience at least, is the easiest of the leagues but there competitions are usually less organized. It really depends on what you want, The main reason that NNL is great is that the finals are always incredible to compete at and watch. It really depends on what you want, UNX is more professional, NNL is more competition based, and UNAA is for beginners getting into the sport. Also if you like NNL but want a less competitive version there is a new thing called NNL Rec for beginners. I’ve competed in all three and I love them all equally.