[Alneyan]

Oops, I should have specified I was talking about ship mounts and not base/unit mounts. While the latter does give extended range, the ships granted to ships do not. (If memory serves right, some base/unit mounts also give increased accuracy)

Obviously, bigger mounts are compulsory for bases and weapon platforms (or satellites if you do want to research Satellites III) given their impressive bonuses, but I don't find them that much more useful for ships. On the other hand, Massive mounted weapons cost exactly as much as regular weapons, so it doesn't hurt to use the biggest mount. Having less weapons packing a bigger payload means your weapons are a bit more vulnerable, but it also helps if you want to repair your ship, so I guess I was too wary. (Who said "paranoiac"? Shhh, they are out to get you)