ORIGINAL: OzMo
Well you sound as if you have the NEED FOR SPEED bug.
Try a fast foamy that can use the gear from the cub. Such as a small flying wing or delta wing.
Likely the gear will survive this plane and scratch built foamies don't cost a lot of scratch.
Free plans abound with just a bit of a search here on RCU.
The plane won't cost much and the learning will be pricless.
i have looked at stuff from "budget RC". the dynam's motor and motor mount are not a common design. so it wouldnt be easy to use them. plus i would like to keep that plane RTF. the supercub is brushed, so i dont think it would work good for a foamy.
i have considered putting a more powerful ESC and motor in the dynam. the gear on it now is a 18amp brushless ESC, 1300kv outrunner, 3s lipo, 9x5 prop.
i tried a larger prop, but that melted part of the motor mount!
you hit the nail on the head tho, need for speed. my dynam flys really good considering it is a low cost plane($130 RTF) and i can do many tricks with it. it has also withstood my learning curve! many hard landings, one time stuck in a tree, and even hit the uprights at a football field! any damage was a quick fix with tape.