Stable, deceptively fast and very agile. She'll go into n-a-s-t-y spins / stalls, but will give you plenty of warning beforehand. Only started flying it after a few years away from it, but the f6 is a great starter aircraft for new people, and a monster in the hands of those who know how to manage E-fighters.
All in all, it's a very difficult aircraft not to like.