I know you have already made up your mind, but I just want to add that I have a GP Dazzler and it does 3D with an OS .46 AX and an APC 12.25X3.75 prop on it and it does 3D very nicely, hovering at half throttle. So the Twist which has bigger control surfaces and more throw, with a .50, you should be more than happy with that combo.