Haven't had a chance to play 1.0/1.0.2 yet, but noticed this thread and the payload challenge thread and wonder one thing... How come there is doom and gloom on the SSTO/Spaceplane front while rapiers and jet engines are punching in close to or above a 50% payload fraction in the challenge thread. I know the speeds and top altitudes have changed, but surely there is room to take the lessons learned in that thread and make a 30-40% payload space-plane. Payload challenge thread: http://forum.kerbalspaceprogram.com/threads/116729-Stock-Payload-Fraction-Challenge-1-0-2-Edition