ORIGINAL: bigedmustafa
You have to move up to a pattern ship or a scale aerobat to find a more capable airframe than the Super Sportster in an ARF configuration. If you're confident that the plane is within your skill level, you should stick with it.
I would wait on a pattern or scale aerobat model. Yes, pattern models are about the most stable thing out there, but it sounds like you may still benefit from and want a little self-correction. Mid wing aircraft with symmetrical airfoils won't fly at high angles of attack and are more prone to violent stalls.
That being said, as BigEd mentioned the Super Sportster is much more capable than the Four Star or Tiger II and if you were comfortable with it I wouldn't take a step back. I just wouldn't take another step forward to a pattern or scale aerobat model yet.