The Goldberg Tiger II is an excellent second plane, either the .40 or .60 size. Also the Sig 4-Star 40 and 4-Star 60 are great- especially if you want a tail-dragger.

Another great plane is the 'stik' type. Like the Big Stik, Ugly Stik, Lucky Stik, etc. They also come in a variety of sizes.

All these planes have big wings and will land slow and easy. They are all available as ARF's too.

I am not familiar with the Super Sport 40 but if it has a big wing and is pretty light then it should work too.