After using Moodle for the past 6 years, I was always looking for a solution inside Joomla, like a component. Finally I found LMS King. The change was fantastic. Forget it about all the complications with Joomdle in order to present courses embedded in Joomla.
The frontend is incredible, and the backend is full of choices.
For me the most important is the number of reports out there, which makes me easy to track the student activities.
He also surprised me how quickly and efficiently they answer when you need help. Truly outstanding.
I know that Moodle is free, but what I paid for LMS King was worthy.