i would go with the ersky9x board, a lot more options but you will have to make holes in your case or the options to be available from the outside, I have been following that board as it is being made and looks to be very promising i also have an AXN they are a sweet machine, just make sure you build it light especially i your planning to FPV from it, and the people as the 9x forums will be happy to help you with whatever help you will need also the maker of the board is there also and is willing to answer any questions you will have about it, the smartypants board maker is there also and will do the same,
Turnigy 9x with ER9X and back light FrSky DHT 8ch DIY, FLD-02 Telemetry Display Screen
AXN with 6x4 prop .... AWESOME!!!!!!!
Canterbury Sailplanes Jazz 60 and Eraser 60
Dyna-flight Butterfly ( under construction )