I have been looking at the Kyosho Flip 3d, and I have heard good stuff about it. I looked into the Znline Madness II, but it is too expensive, and it is not currently available. Has anyone tried a YS on one of the Espritmodels Diablotins? Any other planes that will fly really slow and flip fast? I recently put my ys63 on a tower Uproar 40, and it flew fine, but the engine was much more than the plane needed.