I'll be using 2 of my own ships as examples, it would be great to add descriptions, THANKS! (Also for clarification please do not use the bigger ships "mod")

The Iron Frigate, whilst technically the first ship in the "J-Series" it was designed before the age of such ships. Costing 4.3 million this missile+Ion Beam based ship packs a mean punch.

The first true, tried, and tested "J-Series" ship. Using certain aspects of the modularity of the Iron frigate. Costing a whopping a 4.7 million it delivers for every dollar.