I put this topic on the marvel comic forums because I did not want any unconscious bias from Xbooks and Spiderman forums.
It may have been by luck or by chance that both the Spiderman and X-Men series built an entire universe that can function on its own away from the rest of the Marvel Universe.
Between the two universes
1. Which world you like to live in
2. Which has the better world building
3. Which Universe does Marvel publishing like more or play favourite with.
4. Which is your personal favourite.