So far I've been using CherryPy, and compared to Django (which, while not in your list, is the only other dev server I used) I like it heaps more. It does what is says: it is only there when you need it, and gets out of the way for the rest of the time.
Using Django seemed like I needed to subscribe to the Django way of doing things. Although Django provides heaps more functionality out of the box (default admin interface, widgets on your webpages) , using CherryPy seems like just another import that has very good (often surprising you with extra) functionality.
