I only have a couple that I fly & I bought them on Ebay. ,a 51" wsp PoleCat( it's a rocketship) & an Extra 330L. Both fly really well, no bad habits that I've found. I just bought a Zlin 50 on the Black Friday sale. I doubt if I get around to building it till next spring. If you want to be impressed with the number of Nitro Planes, get OPJOSE to list his. I think he has over 30 !! He knows as much about them as John does. I would like to see that list myself.