What an awesome airplane. I have really ran this plane through it's paces. From inverted fly by to low and slow. I have an OS .61 powering it and it does just fine. I did put on a bigger tail wheel because The flight club is a grass runway(not the planes fault). The covering right out of the box was as smooth as silk, no wrinkles at all. If your stepping up from a .40 to a .60 let this be your first. The sound from the engine resonates through the wings when you fly above you and makes a great sound. This plane puts the bigger competition to shame, look out Horizon. And great job Value Hobby. Thanks.