Personally, I didn't like the original giger drone that much. You could tell it was a man in a rubber suit, it was slow, intelligent yes but didn't have the same deadly appeal in my opinion as the newer & deadlier style aliens. The movie was made in ' 79 so most of these reasons are because of the effects & the fact that the alien just seemed so slow. If giger did effects on aliens today they would probably br excellent, but for me the original drone just wasn't very good. The drones from AVP were fast, deadly & very well done so there's my opinion