To me the original has always sounded better. The new one is laughable at best. It is just two guys making stupid noises and stuck through a bog standard effects chamber. It never needed to sound more human. It sounded great that he could imitate a creature which scared the Tuskens. Now when i watch this scene and hear that new howl i keep expecting the Tusken's to tuen, pause then fall about on the floor laughing. And, yes i know they are supposed to be easily startled, but if they can be scared off by a silly whooping noise then how can they be so feared? It makes the scene in AOTC, when they talk about the Tusken raid and how many died pathetic. They should have just all made some silly noises and the Tuskens would have legged it ;)