The G Force wing does help it fly much better than a flat plate wing. It even helps them glide much better. I will also add that foamy biplanes seem to fly a bit smoother than do mono wing planes. I'm not sure why, but they just do. The bipes can be bit tougher to 3D though, they just fly differently. Coupling is often more of an issue with bipes, once you get used to it it's no big deal and much prefer bipes.