[rdouglass]

To me it depends on the mod. I usually stop researching ship sizes once I hit the Massive Mounts. To me (and with most mods), the Massive Mount does the most amount of damage per kt when it comes to DF weaponry.

For the punch that the mounts add, I'll take the slower ship. But if a mod allows Massive mounts with battleships, I'll stop there since they normally allow more engines.

All this is virtually irelevant with some mods like P&N...