If you want a sturdy fun flying plane i'd get the Goldberg Falcon lll below before i'd get the tower trainer 40. My nephew had a tower trainer and liked my Falcon lll lots better than the tower trainer.
http://www2.towerhobbies.com/cgi-bin...?&I=LXDJB5&P=0
Here's mine below and I have over 650 flights on it and still going strong. I refuse to part with it.