Obviously, the first movie is the best. The second is very good, but not like the first. Anyway, I would like to see a sequel more like the second, in a city or even in a future city like the cities of Blade Runner or Robocop.
The last movie is the worst (not counting AVP movies, better we not talk about those... things), but it could have been the best. I miss the "River Ghost" (they should not have discarded that part), the character of Laurence Fishburne should be more relevant, and Adrian Brody didn't fit as the protagonist.
P.S. I love the "super-predators", but I like to refer to them as "heavy predators" (the "light predators" would also exist). I think they are more like a different ethnic group, not a different race.