I remember the colt the trainer, the nighthawk and the cub they made, it seems that popularity seemed to favor the duraplanes and the Balsa ARFS. Yes they wiegh more and yes there are better flying planes out there but you can doink the heck out of a aircore and still have a plane, unlike a balsa trainer. I still love the balsa trainers over the cloraplast aircores but they are durable.