I have a similar problem with this poll. These franchises are carried but 1 great film: the first Matrix and the second Terminator. So, you're stuck weighing the crappy sequels against the anchor stores to see which nets out the best. I think Terminator nets out the best becuase T1 was pretty decent. But, Matrix I and BladeRunner were both smarter movies than T2.
BTW, Soylent Green is an excellent movie. "Soylent Green is people!!" Outstanding. Reminds me of that Twilight Zone episode "To Serve Man" when they think "serve" means to provide service and the lady at the end says, "It's a cookbook!!"
Hey now, neither predator nor soylent green have a machine as an antagonist, so those don't count, special though they be.