Seriously though "better" is kinda subjective but I think Methalox with a full flow staged engine is pretty good for launch and Hydrogen with a nuclear thermal engine is good for orbital maneuvers. Part of the fun is learning what Isp is and exhaust velocity and engine cycles and TWR, not to mention experimentation and trying different designs for yourself. So you tell me, what are the best fuels?!
Seriously though "better" is kinda subjective but I think Methalox with a full flow staged engine is pretty good for launch and Hydrogen with a nuclear thermal engine is good for orbital maneuvers. Part of the fun is learning what Isp is and exhaust velocity and engine cycles and TWR, not to mention experimentation and trying different designs for yourself. So you tell me, what are the best fuels?!