This is the flight controller that I use in :
- Tricopeter #1
- Dragonfly
- Dragonfly 2
- Hummingbird
Once I got used to it it is relatively easy to set up and configure.
It lacks some features available on more expensive flight controllers (barometer, gps etc.) but it's a great entry level flight controller.
The lack of advanced features means that it takes a but more control from the pilot to fly but the extra effort required will help to improve your flying skills.