The Ascending Technologies/Astec X-BL/Funpilot/Falcon, etc and X-BLCs have 1000hz update rate. Those are Astec quads you see flying in the laboratory doing amazing control movements. Of course they are controlled in those videos by a separate computer that uses IR sensing and positioning mapping algorithms to the tune of about $500K+.
Quadrocopter and Tricopter Mega Link Index
Originally Posted by Justin Stuart
Who makes an ESC that refreshes at 1000Hz?