Not quite as deep, complex, or philosophical as the original trilogy, but still a very good story all the same. The ending left some excellent teasers for books to come.
Definitely the Sanderson book I have enjoyed the most other than the final wheel of times. I think that this book has character, dialogue, and a pace that the other mistborn titles never had. I always wanted something more fulfilling out of the first three, but alloy of law nails it on the head- every turn is enjoyable. Cannot wait for the next two.
Much faster paced then the first mistborn novels. More of a mystery and 1920's feel. Would be great to read without the first three but better with. Buy this book and you won't be dissatisfied.