What I have come to discover, is that the Hobbyzone side of Horizon Hobby is basically for beginners. They brand the Super Cub, Mini Super Cub, Firebird Stratos, Champ, Firebird Commander 2 planes. All are "beginner" type airplanes. Parkzone is the step up brand with their line of full 4 channel planes and mircros; usually all foam based. Then there is the Hanger 9 stuff which is usually high end balsa and ply planes. Those are the differences I see. All are under the Horizon Hobby umbrella. You will also see stuff by E-Flight used with Horizon Hobby stuff too. All of the E-Flight batteries and chargers work on my Parkzone and Hobbyzone stuff too.