There are some good mods for the SSE for knife edging and getting a better flat spin. I actually just picked up a new kit. I should never have sold the other one
Saito 82 plus all the tail mods and bolt on wings for this one!

The Mid Star 40 is alright as well. That was my second plane. No complaints with that one either!
Not AS aerobatic though!
Tripping down memory lane here