Dredd was great. Enjoyed this while on holiday in London, England - and saw it a second time back home in Toronto. Far better than the first. I don't know much about the Dredd comic, but this film fulfilled all expectations as a novice - guns, armor, and bloody-ultra-violence. I think the best move was casting Karl Urban, who as a relative unknown has no qualms donning the Dredd helmet and foregoing screen recognition. Dredd is the faceless dispassionate law. This was offset by the empathic rookie Anderson played by Olivia Thirlby. In terms of pacing, the film was a well-executed escalation in violence, and no player in the drama did anything ridiculously stupid.
Overall, thoroughly enjoyable.
I can't also say it wasn't enjoyable watching Cersei Lannister, aka Ma-Ma, aka Lena Hedley, get hers in the end!