Have been using f2c (pro) for all sites for years now. And this is by far the best cck there is for making native Joomla articles. With f2c I can make a Joomla site with advanced design and functionality that even my grandmother can update without making it look bad ;-)
Choose imagecropping on upload, with the option of preset proportions, is just one of the functions where Julien has excelled. Patrick and Julien has made a component here that I can't do without. First thing to install on any Joomla site.