This is an awesome sub 250 frame. It really does feel the closest to flying a 5 inch I've ever flown. I'm running on a 20x20 stack, 1504.5 3950kv BH motors, hq 3x3x3 props, DJI 03 air unit, and some 4s LiHV 660 batteries. Getting 3.5-4 min fairly aggressive flying, and came in around 240g all up weight.