Aimdroix has developed a new race frame, the Blazer 180, which can be built as a 210 by just swapping arms. In fact, for mine I left just enough slack in the motor wires so that all I need to do is swap arms and I can switch up to 5045 props easily. It uses the same arms as the Blackbird 250 so it'll take the same motors from 18xx to 22xx , lots of power possibilities!
Mine comes in at 458g with the 1300mAh 4S Tattu in the picture. I've done a thrust test of the 2204 cooling series Emax motors with the 4045 DAL props and at full throttle they put down 460g, should be a fun ride
I recently finished my build and put together a video documenting my process and part list. It's the first time I've done a video of one of my builds and I certainly learned a lot during that process, better camera angles next time (I promise! )