I owned an Aircore that I used to train many new pilots. The airplane is very sturdy and impossible to destroy. It is a little heavier than a regular trainer but it flies just fine. A ball bearing .46 on 15% nitro is required to adequately power this model.

I would recommend building your own aircore type airplane for much less. Check out www.spadtothebone.com and look for plans to the Debonair trainer. It can be built for about 25 bucks and is a quicker build than the many required folds in the aircore kit.