WP Event Manager is first of all super easy to use. I had it up and running in a matter of minutes. But it also has a lot of customization options. The field editor is really awesome! You can basically change/add/remove any field that you see on the back-end and front-end event submission forms. This allows you to build something tailored specifically for your event. The developers are very generous as the number of options in the free version of this plugin will surprise you. Definitely take it for a spin!