For my first tricopter I was thinking of going with the KK2.1 board, but I really want the benefits of a GPS enabled controller. I stumbled across the Multiwii Pro 2.0 from ready to fly quads and it looks great. For only 60 bucks it comes with GPS. They also say it is ready to fly out of the box. Unfortunately I have no knowledge about the MultiWii boards. I have seen other articles about people running them with Wii controllers (I assume this is the original purpose and where it got its name from) and was confused to whether it works with a normal TX (I have the 9x). Also are the gyros a part of the board or do you need to buy them also? I know that these are probably dumb questions but being my first board, I have no idea. I want to know for sure before I buy. Also I plan to eventually do some filming with it so it needs to be pretty stable.