I still think the Idris-P is the more useful ship
it may have only 1 powerplant but it is described as the patrol version so it will have range.

To me the Idris-P is top of the line for killing ships and the
Idris-M with its railgun is bottom of pile at killing capital ships.

if we are going to go cap ship hunting roll out the bombers

A mark two "peacekeeper" variant developed for the UEE patrol services, the Idris-P strips the standard ship's ship-to-ship gun and spinal mount in favor of additional cargo capacity and superior speed.