I watched both the US and European versions. Saga nailed it, where as Sonja was not as interesting or compelling. I liked the Euro version better, but the American version had a lot to offer as well, especially Sonja's partner Marco and her boss. They didn't need to stretch into 13 episodes with additional subplots that the Euro version accomplished in 10 weeks. Such is the fate of American television, however.
Liking "True Detective" so far.