There are circumstances under which maintenance is slightly more useful though, but even then, the difference isn't really important. And likewise, I believe that increasing resource production is more important when you don't have much ships and you are building a lot of ships and/or facilities. (In the early game for instance)
However, thanks very much Oleg, you made me realize I picked a "maintenance reduced" ship
Now redoing my calculations. Sorry for my silliness. *Grumbles*
EDIT: Actually, almost all ships are using a "Reduced maintenance" ability according to the vehiclesize file, but not all show that ability in their descriptions. Thus partially explaining my mistake. (Only partially since I could have checked that is)
[ October 24, 2003, 15:23: Message edited by: Alneyan ]