I have my faves, but I always look up to the X-Men as a team. Always have, always will. I'm a fan of them because of the concept, their relationship with each other, and the metaphor they represent.
And tbh, I think this is also the reason why solo books that is not Wolverine are not selling that well (bad writing aside). It's arguable though, because Magneto has some good writing and good sales, so.