I am on my second one, another yellow one. Radio problems finished off the first one. They are great flyers, I really like them. I put in a 12oz GP tank and a Saito .56. Unlimited vertical etc with this set up. In fact full throttle on take off will put you in a nasty torque roll. The 12 oz tank will fly it for a good 15-20 min. Much longer then I last :-]. Careful if you use the WM tank that came with it. They have a nasty habit of leaking. The metal disk vibrates loose after a while.