Ok, so it’s already 2012, but I just came across an article comparing the three from last year and it was a good read. Like a lot of articles, though, the real value is in the comments more than the article itself. Going into it I had the impression that Joomla was a stagnant mess, but it sounds like they’ve really cleaned things up since the last time I used it. WordPress is still my default choice for most projects, but I’d give my left arm for it to have an object-oriented, MVC architecture like Joomla now does.