I wanted to build a 3" Jappy with a full-sized flight controller as it has a surprising amount of room under the hood. The stack is a BrainFPV Power Board, Radix flight controller, topped off with an AKK FX2. The Cobra Championship motors and RR Edition Swift 2 really set off the silver frame. It's never going to have the agility of say a Catalyst Superlight, but it's a blast to fly and pretty well indestructable