Nate and Maverick are right
Dont get my wrong, I love SPAD3D's and yes you can make one for a .25 that does everything the big one does (I have done it). I have seen the Mini 3D in person. When it comes to performance the SPAD3D is a local saturday night dirt track race car. When it comes to the mini 3D then we are talking NASCAR and beyond.
But yes the SPAD3D takes a hell of a lot more abuse.