I voted for Moebius. Admittedly, I'm cheating because I'm privy to a full plot outline to Gray Matter 2 and a more detailed outline of Moebius where the mystery is revealed.
The intro to Gray Matter is way too awesome and creepy, and the story is great. However, Moebius' heart of the story is so freaking original and feels so incredibly fresh that it's hard for me not to be inclined towards it. I'm glad it's leading
And don't worry, Malachi will have his flaws. Jane is best at writing male characters, and Malachi wont be an exception.