I just watched all 5 of the original planet of the apes movies. In order, it goes; Planet of the Apes, Beneath the Planet of the Apes, Escape from the Planet of the Apes, Conquest of the Planet of the Apes, Battle for the Planet of the Apes. The first movie was simply brilliant, written by Twilight Zone creator, Rod Serling. Of the 4 sequels, 'Escape' was the best one. The others, honestly, are not so good. And the last movie, 'Battle', is pretty awful. The cinematography is not big screen quality, the set designs are bad, it just feels really cheap, like a poorly produced 'made for TV' movie, even by the standards in the 1970's. Even so, there are some great ideas in all of the films, like apes wearing jumpsuits!