Egg morphing all the way for me. I find the queen to be... well, deliberately taking the plot into a very predictable B movie finale. What I love about Alien is that it is a high class, gorgeous looking film that was inspired by B-movies, but took such themes into a warped and twisted version that in places has ideas almost too hideous to want to explore.
Whereas the queen is just the 'big bad' and plot wise is a massive disappointment.
And, I don't get why people say the Dallas scene looks bad, it looks suitably hellish (like the larder in Chainsaw Massacre) and I find the fate of Brett and Dallas really effective. The cocoons in Aliens though look like Santa's grotto and there's no sense of empathy with the one live victim. It was really good to finally get to see how cocoons were meant to be done.