I have built and flown the Great Planes 40 Cub, Goldberg Cub and I am now flying a Sig 1/4 Clipped Wing Cub(see my Avatar).
The Sig is by far more scale than the Great Planes Cubs, the BUSA Cub is supposed to be a nice Cub also. Both the Sig and the BUSA are builder kits. You can do a search here and find my Cub thread, it covers the complete build with alot of pics. The Sig Cub is an excellent flying plane.
Later!!
Anthony