Herr Piper Cub
I just completed this model the day before yesterday. This is a really fun kit to build. I recommend it for first time builders, but not for first time pilots. It's not exactly a trainer, but it is easy to build.
The only problem was defective fuselage sides. Sig replaced them but the new sides had the same problem. I managed to work around it, but they never called me back and I doubt they've corrected it. If you buy the kit and have the same problem, please contact them so maybe they will get the message.
Other than that, the kit went together quickly and I really enjoyed the project. It was a nice break from some of my more complicated stuff.
It's designed for a throttled 1/2A engine such as the Norvel, but the person I built it for wanted it to be electric and supplied a way over-kill PJS 1000 out-runner motor. It's too much motor and he'll break the wings if he's not careful.
If you want to build it for electric and don't mind spending the money, I recommend the AXI 2208/20 that I used on the [link=http://airfieldmodels.com/gallery_of_models/rc/bmjr_models_splash-e/index.htm]Splash-E[/link] I built prior to the cub.
More details of the construction on my site:
[link=http://airfieldmodels.com/gallery_of_models/rc/herr_piper_j3_cub/index.htm]Herr Piper Cub[/link]