I am saying goodbye to JRoller (http://jroller.com/rezaghp/) after a couple of years and moving to WordPress. I found WordPress an easier platform to work with. It has more support for code insertion, cleaner editor UI, more modern templates, etc.
JRoller on the other had is really lagging behind technology, at least at the moment. The editor needs huge improvements and does not support many new features, it does not support Ajax, there is no documentation etc.