RE: the parkzone j3 cub
I've flown both the J3 Cub and the Decathlon from Parkzone and they both fly great. To be honest their the same airplane with a different color scheme. Both take off from the asphalt really well. I wouldn't suggest grass. They can do loops and stall turns but they don't fly upside down and they don't have ailerons so you can't roll. However they are great airplanes for someone wanting to learn the basics to flying model airplanes and they can teach you how to land and take off.
Bevo