I have a rather complex (one man year development in total) specialist website application based on a CodeIgniter framework. I now have a requirement to add CMS functionality to it so that the users can add articles and similar content to the system to compliment the main functionality.
There are obviously several CodeIgniter CMS systems available - FuelCMS and PyroCMS for example, but which of these (or another) would be best for integrating into a developed site with minimal impact on existing code?