I've started a hunt to replace the blogging backbone of BeatCanvas. Cool that I created my own, I suppose, but I'm moving away from programming, and so I'll look for the work of someone else to replace mine.
My first choice thus far is Moveable Type. I want mine to be commercially capable, and MT comes with a commercial license.
I'm also familiar with WordPress. But it's free. I'm probably weird this way, but I'm leery of free things. And I don't see any built-in support for images. (Not that I need that kind of support for myself, but if I extend the site to make it available to other authors, that would be important.)
So, if you have an opinion/thoughts about this, you can email me (top-right of the page) or comment here.
ETC: Reading around, I've become impressed with ExpressionEngine. I'm signing up for a trial...