I switched to Textpattern, and thought it rocked. But after a week or so ... I have to say that WordPress is better, even lacking a few of the features that Textpattern has -- multiblog, and the ability to manage my entire site.
I'd much rather hack PHP and mess around with WordPress includes than use Textpattern. Why? I have no idea. But using Textpattern feels like using Windows XP, whereas WordPress is rather much more like Linux.