Iflight SP Racing F3 SPR F3 V1 Flight Controller Board Cleanflight 10DOF Deluxe with Brano and Compass& Protective Case for Mini FPV Racing 130MM 150MM 180MM 210MM 250MM 280MM Quadcopter Frame Better than CC3D Naze32 Flip32 RV5 10DOF Better coding practices and introducing tests, easier to maintain and for future development. (Dominic has software development background) Many bugs fixed from Baseflight Supports more flight controllers, including CC3D, CJMCU and Sparky Supports OneShot ESC and more than 8 RC channels ship to USA via EUB,estimated delivery 5-10 days