One of the easiest planes to fly is a 3D plane set with conservative throws. The first one I tried was bought from Morris Hobbies I guess about 20 years ago..it is called the SuDoKoi and is powered by a Rossi .45. Capable of very slow landings and a flight envelope that you could spend hundreds of hours exploring. Since this plane came out, there has been an entire Universe of great 3D designs made available.
For beginners, seek out "profile" type planes.
If you are past the point of needing a plane with self correcting traits and just need a plane that is highly forgiving [stall proof].....then a 3D plane is a great way to go.