EasyDiscuss is very easy to install and manage. Definitely not only Q&A component, but something beyond that can take engagement with users to the next level. Easy installation, easy setup and excellent support!
EasyBlog is probably the best extension out there with absolutely unparalleled support. I doubt that anything can match EasyBlog flexibility and stability. Regular updates, easy 3rd party integration, stability and speed! Highly recommended!
I am using Joomla for so many years and I was having many problems with bridges to 3rd party scripts. Kunena is the best forum component for Joomla, excellent support and regular updates! Keep the good work.