I built one in October. Used the hardware from a destroyed Panther. Figured I'd throw another $60 at Wingsmakers EDFs. Amazingly it took off from a grass strip. Isn't as fast as the Panther, but I found it more stable at full throttle. Alas, after 3 flights I put it into the trees and lost some of the landing gear. Impossible to hand launch. It would stove-pipe. So I hooked up a bungee and voila... It was aloft again! Much faster without the gear and even more stable. I'm happy.