Nice flying!
Have you ever used a KK Board and would be able to tell about differences in the controll of Multirotors ?
I have bought and flown almost every flight controller I can get my hands on. everything from KK to MK. UAVX, old TT boards, list goes on and on. I still have my X-BL UFO.
I think KK is one of the lowest grade boards over all. . (not looking at price)
KK is the cheapest FC out today. most of the use a Murata Gyroscope , and can have problems with temperature, and other things. KK firmware is old, and very limited. No autolevel mode.
If your going to fly, I say get something with all the bells and whistles.