Here is the bare bones 250 class frame, weighing in at 350 grams without battery.
Gave it a quick test flight. Flew it for 2 minutes and battery life still at 12.2 volts with 3s 2250 mah.
This is why I like to build my own frames. You can make it light and how you want it.
Seems very quick and responsive, even with generic emax 2204 motors running on 5x4 props.
Hopefully I'll do some flips in manual mode.
Have to mount a camera and video transmitter so it'll probably add another 50 grams.