RE: Scale Aerobatic Second Plane
Photonic, the 4*'s and Tiger II's are reccomended for very good reasons. They are perfect second planes. They were designed just for this purpose. I strongly advise one over a Cap or an Extra. If scale looks is a must then the profiles mentioned are a very good place to look. Otherwise the Sometin' Extra with reduced throws should be a good choice.
Once again I would strongly advise against the full blown scale airobat until you have the nessecary skills. Good luck with whatever plane you go with.
Mark Shuman