Hy guys. Is my first post in this forum. I am an Italian guy from Italy. Actually I fly with a zlin savage cub. Is the plane of my aeroclub. But now I m looking for buy my first light aircraft.
I have find it... But I m not sure what kind of model it is.
Can you help me. See the picture attached
IMG_20190625_202606.jpg

What are the main difference from model 3 and 4.
Thanks in advance to those who will be able to help me.

Miki83.