Hanger 9 Fly First Class. Sundsowner, Frenzy, Eratix, ETC, all work great and were build friendly. The Sundowner one of the very first out a yr or so ago. Came with a faulty part. Horizon is the company I got it from but they won't stand behind it. But the plane itself had nothing to do with the part that broke It was a part they recommended using to keep muffler in cowl. Now comes with statement not to use stock muffler. That is why I think they should have replaced mine. It did not come with such info and others had been having this problem. Nothing to do with Hanger 9 at all though. I just throw that in when I can hoping the will get tired of seeing it and actually replace my plane. lol. Has not worked very good so far.