Visually it is absolutely stunning. There's enough meat in the plot to make it more than a popcorn night out. That's not to say it's flawless but I'm thinking minor niggles only. Well worth the price of admission.
Going tonight. Loved Alien. Didn't care for the sequels. Am giving Prometheus a go as Ridley is back on board and the story is heading off in an entirely new direction. I'm not expecting an Alien prequel per se so let's see where we end up? Should be fun.