to seasoned fliers junk they maybe, but to someone trying to teach them selves they are little foam gems. A friend at work got one and self taught, even building a longer wing to change how it flew, so yes it taught him, hes now moved on to a sports glider and a Gamberler with a over sized engine which he flys alone in a school field, despite my words he just wont drive to our field wheres its safer.
Firebirds teach you how to fly, not how to be safe it seams