I use Advanced Custom Fields on many of my projects, it removes a lot of the headaches for me as a developer but more importantly it makes the content management experience for the end user very simple.
The UI for the plugin is great and there is a ton documentation and commercial add-ons, you can't go wrong with this plugin.
I was disappointed to hear that it was pulled from the plugin directory and I'm looking forward to its return. Not sure what I'm going to use it for yet, but I purchased the Repeater Field add-on to support further development of this plugin. Keep up the great work Elliot!