Well, the time has come for me to pass on this burden. To my mind there is only one person to fit the role, and it's someone I'm surprised has not received this prize before. I refer to
Range who has written so many AARs based around one character. His latest piece is
http://forum.paradoxplaza.com/forum/showthread.php?497201-Transylvania which is long running and successful.
Now, while I might not understand everything that happens in the AAR, nor the constant cuts back and forth, the truth is that the character of Range is a longer running, and more in-depth than almost any other. So congrats!