I think that trying to name the "best" is a little too random and divisive. Wouldn't it be better to recognize some of the great devs and contributors who have made using our devices so much better?

But I'd like to give a shot out to Coderus for his many contributions, especially including Unrestricted System UI. Great job. And I totally agree with him that itsnotabigtruck and Inception were game changers for the N9.