like the title said, i watched them all
i dont really understand the hate for Next of Kin, it's a boring start, yes, but it's a really good movie in total. I like how Sam is now the vessel for Tobi/Asmodeus and how Asmodeus isn't dead, he's Sam now
Here's my top three of the movies:

#1 is the first one, its perfection
#2 is The Marked Ones, peak fiction
and #3 is Next of Kin