Skelrad,
I think I have found the perfect plane for you. Its the U.S. Aircore 40 Trainer. It is a plastic, foam, and wood airplane that is "indestructable" It is selling on tower for only $70 [link]http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXKH24&P=7[/link] I have also posted a pic of an add that was in MA a few years ago. It may be a bit blurry and hard to read, but in the lower right hand corner in the blue box it says, "If you crash and destroy your U.S. Aircore 40 Trainer before you learn to fly, we'll replace it - FREE!" I admit I have never flown this model, but I have seen it fly. I also know people who have crashed theirs several times without destroying it. But with a free replacement guarentee like that, I don't see how you could go wrong.