For those of you interested in the Nitroplanes/Hobbyking Predator
(they're essentially the same plane), here's a great build thread
on how to make it, along with a very sobering set of warnings and lessons learned the hard way about how it flies. Basically, tip stalling is a huge problem and you have to land it with long, straight and fast glide paths or it will crash (I've already lost one that way). Basically, it's a poor airframe for UAV/FPV/AP use; we just use ours to show off at conferences.