People always ask me, what stack do you recommend. I've tried a lot of great flight controllers, and a lot of great 4-in-1 ESCs, but honestly, it's tough to find a set that includes both and works well. The Xrotor stack from Hobbywing however, has always served me well. It's a solid flight controller, easy to install, and functions reliably. The ESC can handle everything I throw at it and installs cleanly with the FC. A great combo that I can rely on.