Ok so I have a Mamba F405 mk2 20x20 with a max burst of 30Amps with 4S batteries and I have 6 inch props. I also want to get the Emax ECO 2207 or the 2306 motors. Now I'm not understanding the KV and what I should go with. I've had people tell me go with 2400KV then some say 1700KV and nobody has given me a why they say that. I just dont want to waste the money getting the wrong thing and also dont wanna destroy my FC or ESC. So can anyone give me some advice as to what to go with and why? Thank you in advanced.