Hello all, So I've been landing on the Mun for a while now, my best effort to date being a 1.5m/s touchdown in a Midland Crater, felt properly smug for a while. My question is about efficiency. I currently land my command pod and fuel for return on the surface, and blast off to get back to Kerbin, usually with no fuel remaining, and using all but about 30 units of mono propellant from 80 to start (I use some fuel and mono on the descent final seconds also, after detaching the main stage. It works pretty well, and it's a design that's done the job for me thus far. But I'm not convinced that this is the best method, and even a small weight difference on the lander can mean a significant fuel usage increase to get out of the atmosphere at the first step. So, which is more efficient/easier/better as an option? 1. An all-in-one ship and lander, leaving behind no parts. 2. A lander leaving behind the landing fuel surplus, tanks, engines and legs, with enough power to return to Kerbin alone. 3. Lander docking with an orbital command module for separate Kerbin re-entry. Eventually, I plan to build a Munbase Alpha (complete with flared trousers and implausible science fiction scenarios), and an orbital station for regular surface-orbit transfer activity, and also to serve as a design prototype for deep-space manned missions. For now at least, I wanted to know if anyone had an opinions on this, and whether anyone has actually tested the weight/fuel-consumption numbers to see what works best. I'll upload a picture of my lander when I get back home from work. The best part in my opinion is that it also leaves zero debris in orbit and only a flag on the surface. That said, I kind of like the idea of leaving part of the spacecraft on the surface as with the Apollo missions, but that's really not an important feature, not crashing into empty stages is far more important to me... P.S. I'm also playing this in career mode.