I've been playing with both. Litchi is pretty much drop dead simple to use for waypoint missions. Orbit, cable cam, etc isn't built in to add to a mission but you can simulate using a maybe a dozen waypoints.I'm was leaning towards getting Dronelink because it seems you can do a little more with it like combining waypoints with other moves like orbit.
Donelink does have more features but has a much larger learning curve. Almost every aspect of the drone can be adjusted but that also leads to complexity.