If you're building a multirotor in India, the ESC is one of the most important parts in the build. This 30A SimonK-firmware ESC is popular with drone hobbyists for its fast throttle response and low price. Why SimonK? https://bookmarkedblog.com/story667676/30a-simonk-brushless-esc-the-reliable-pick-for-fpv-quadcopters