I keep hearing about how much lighter a certain brand of engine is. I would rather have the quality over how many ounces I can save by buying the lighter engine. I have an Aeroworks Edge with a light BME 50 (love this engine)and I still had to add several ounces of weght to the nose of the plane for balance. I also just finished a Carden 30% Extra with a Brison 4.2 and still had to add 7oz. to the nose for balance. So you buy the lightest engine on the market just so you can add more weight to the nose for balance. The Zenoah G-62 is a heavy engine by todays standards but is one of the smoothest running engines out there and cheaper at that. I want an engine that is readily available and able to get parts for it without a one or two month wait. I will not order an engine and have to wait two months for it. There are too many brands out there that are good motors and worth purchasing without the loooong wait. Of course this is just my opinion and I'm sure I'll get flamed for my view.