Not to mention you will not be happy with the Robarts. That is what I started with and they failed quickly due to the weight. The new Robarts look very close to the Sierra's but are not available yet. My second choice would be the Century Jet but they are not that much cheaper and would not be my choice. I have tried every rotating retract that I know for this size plane and I will not use anything but Sierra's. A good modeler once said that a plane is only as good as the legs it stands on and I would aggree. You can pick this plane up at a very good deal so just put the money saved towards the retracts and you will be glad you did. Good luck on your choice.

Randy