I call this, The Leaf. Capable of reaching a steady altitude of 30,000 meters while still having the ability to have your engine running. While going 2000 meters per second, and maybe even a little bit faster, this can get you anywhere on Kerbin extremely fast. The handling on it is very good, with the center of mass, lift, and thrust nearly all in the same spot. This is my first space plane that is actually good. Download here and give it a test: http://www./?d51x31p7xh113d1