I'm not so sold on the virtues of the standard trainer design. It takes alot of airspace for a self correction to actually happen, and they are corks in the wind. Straightening themselves out at the end of a turn is nice, but that's not so hard for new pilots to learn anyway. I've never seen the self correcting tendency help out in a dive. The trainers at my club all recommend the Hobbico Avistar or similar, while quite a few have learned on 4 stars and sticks successfully. Low rates in the setup and a slightly nose heavy CG makes most sport planes quite docile, and they all handle the wind better than classic trainers. The other upshot is that new flyers already have a plane that can perform stunts later, all they need is a different setup.