Review on TCMMRC FC F4 Flight Controller OSD 2-5S DSHOT600 for RC Drone FPV Racing - Upgrade your Drone's Performance! by Angel Peterson

This is a great flight controller. I've built about 4 or 5 good quads with it. 2.5" and 3". They're relatively easy to wire up as they have connectors and you don't have to solder directly to the board if you don't want to. You can also solder to the board if you don't like the connections. The only complaint I have is that some of them come with straps that are not silicone coated. If you try to solder these wires, the sheath will melt. I make all new tethers from leftover iflight tethers I have with other air traffic controllers. They are easy to detach with a small needle and reinsert the silicone wires into the connectors. Another small problem is that it only has a small amount of uart. If you're trying to perform camera or GPS controls, you'll have to get creative.