That's a fair point, eulerfan. I was pulling for Genealogy of Morals for two main reasons. Firstly it's from the latter half of his career, as is Ecce ****, and I think Nietzsche is one of those philosophers/authors who actually did progress in improving both his style and the perspicuity of his thinking over the course of his academic career.

Secondly, I think it deals with an issue that not only has a fascination that's a fresh today as it was when written, but which lends itself to Nietzsche's strengths. He's at his best, IMO, when he's on the attack and ripping through what he sees as the conceits of past and present ideologues.

Ecce **** is a great book, and it's important for anyone who wants to get a good understanding of Nietzsche and his work, but it's so intensely personal in a lot of ways that I think a more typical work written in a less introspective manner provides a better general overview of his thought and style.