The 1oz tanks that Cox Int sells would be a good option. I've heard good things about them but haven't stalled one of mine yet. I have been using 1oz Sullivan round tanks for years with good success. The fuel line that comes with them is not good, though. Too stiff. I use 1/2A tubing with a homemade clunk for aerobatic flight. Put down the brushless motor! Keep that Sure Shark noisy!