Ok, here are my recommendations.

Glow - Prairie Bird with a .15-.20 engine. One of the best trainers I've ever seen. Its just rudder and elevator, and throttle. It's really easy to fly. You might have to do some searching for a kit though, as this is an older kit. This is what I learned to fly on, and I still have the plane.

Electric - Aerobird. Cheap so if you break it, it doesnt break you. Easy to fly....REALLY easy. Most people can have a successful flight first time with this plane with no previous experience. Parts for these things can be found just about everywhere. Dont be surprised if you see these in Toys-R-Us soon. Although they are definatly NOT toys, as that prop will still eat a finger.