Since crashing sucks and auto leveling is cool, I found three different ways to get AL on a KK board. Two ways are DIY with the first being a huge job, the second not too bad, the third being to just buy the thing. It is the KK Plus, if I did the money conversion right it is only $40.00 http://www.multircshop.com/site/index.php?route=product/product&product_id=640
At the top of the page you can select your currency (US$). Your $40 is really close. The lash up looks a little messy, but you sure can't beat the price. I wish the NAZA supported the tricopter. Someone needs to layout a KK board with all that stuff already on it so you don't have to glue it together. I'm sure that will happen eventually. In the mean time, this is one solution. ...Tiger
Ah, I see that now, looks like for about $7 they will assemble this board for you. I might try one. The multuwiicopter from Australia also looks very good: http://www.multiwiicopter.com/products/paris-sirius-cpu-imu-v4-r5-gps-ready-plug-n-play-multiwii
That board looks like the one the Roswell Flight Test Crew used to use. I think they converted to Naza now.