My order:
1 Raiders: the best from a cinematographical point of view.
2 Doom: the best from a fun point of view.
3 Skull: A good mix between all the first 3 ( but what a messed up script...!)
4 Crusade: Can't watch it anymore, I fall asleep each time. I've seen Infodroid edit the other day, and it's so better! (I need to say that I liked it very much back in 89'. It's just that this movie does not work with me no more.)