The main X-MenYou reading any of the other X-books? X-Men is a decent read but the current anthology like style makes it seem like it's not that important but that will probably change since Hickman is writing it himself. I wasn't a big fan of any of the others though after checking out the first issues lol
The Marauders, Kitty is a badass !
And X-Force
I find the three others not good enough even if you have Apocalypse in one T^T