I think Starflight is an imperfect masterpiece. The Mega Drive version gets the closest to perfection as possible, since it's the only one that lets you get rid of the Uhleks by using the Black Egg on the Uhlek Brain World. But the exaggerated fuel consumption really kills the experience on the long run, you can't really do much with it until you seriously upgrade your ship.
The DOS version has the correct fuel consumption, but it doesn't have the Uhlek "glitch" (well, people say the MD "trick" is actually a glitch, but it seems pretty deliberate to me)

I still think it's a 5 star game because wow, the magnitude of everything for its time is insane. The mystery is also pretty cool to solve.