I've used other Custom Field plugins but they're often confusing and difficult to edit, especially with custom post types. Advanced Custom Fields is easy to use and extremely powerful, helping even novice developers create a streamlined backend for anyone. This plugin eliminates the need for user manuals, multi-column shortcodes, and other cumbersome admin workarounds.
The free add-ons are great little tools to supplement this plugin. I have also purchased the Repeater Field add-on and it's worth every penny. Thanks for the hard work, Elliot!