I think this one really has potential, if the crest were actually a "talk bubble" like I use on my site to indicate the number of comments a particular post has.
I like #99. That is headed in the right direction. The only change I would make is to make the height of the bubble the same as the "M" in my name and line it up. The descender can descend below that. I might try moving the descender a little more to the right, so it looks like I am the one talking.