Sig Something extra
This is a great plane. It will work well for a 2nd plane as long as you keep it at the low rates.
I also would recommend that you go for a .46. The Thunder Tiger .46 is good and does not cost that much. The .40 will fly it but it will not provide the power to put this plane through its potential. I am running a Saito .72 4stoke. It is definately overpowered but I like it that way