Mine is Filton Infinity with ys 110. Eventhough I just use 15% coolpower the power is still more than i needed for advance class. The YS110 is really a plug and play engine, just set it up after breakin and thats it. As for the plane, it tracks really well. Knife edge hardly needs mixing and the beauty of this plane is that it flies so slow it gives you all time in the world to make corrections before entering the next manuever.