This control board is the most popular for applications involving autonomy. It has a reasonably fast 32-bit microprocessor, a realtime multithreaded operating system, and much more input/output (e.g. CAN bus, SPI, etc). This autopilot is recommended for users who have robotics and software development experience and want to do stuff like using DroneAPI to develop custom code in Python to control the UAV, develop custom robotics algorithms, do more sophisticated sensor processing, or integrate the autopilot unit with another control board. You might also be interested in it just because it’s the latest-and-greatest open source platform. Either way, it’s a little bit more expensive and requires more experience to set up than other options.