Nah, it's gotta be Ian Sane. I mean, he kind of wins just based on the numbers alone. Let's see...
-Has been around for a long time
-Visits often
-Posts in a good amount of different threads
-Consistently makes at least somewhat lengthy posts
-His username is a pun
I don't think you can really judge based on subjective criteria like the actual quality of the messages and things like positivity, we've got to take a more scientific approach here.
Seriously though, I hope you've been all right, mate.