The DP Ultimate is easy to put together and the quality is top notch. I had a ton of issues with Saito 180 dead sticking on me in high g stunts. Since then I bought a fuel regulator and all is fine. ncrego is right about the elevator... the pull-pull doesn't give the deflection I wanted for 3D, but you can still get by. I'm going gas and just finished the Great Planes Ultimate with a DA-50 in the nose. Here is a video of my [link=http://www.youtube.com/watch?v=8krPaYdN-D8]DP Ultimate[/link] flat spinning... and then deadsticking...