Red ships are from the Diable Avionics mod. The following faction mods are the best, they usually comes with brand new ships/fighters/weapons with unique abilities, more importanly, they are not overpower compare to vanilla ships:
Blackrock Drive Yards
Dassault-Mikoyan Engineering
Diable Avionics
Interstellar Imperium
Outer Rim Alliance
Scy
Sylphon RnD
Shadowyards Reconstruction Authority
Neutrino Corp
Underworld (small upgrade to pirate ships, add another small pirate faction call Starlight Cabal)
Junk Pirates (another & less evil pirate faction)
Paired with both Nexerilin & Vayra's Sector mods then you suddenly get a brand new game!