u/Effective-Ride520

im making a hard scifi worldbuilding project, but i cant decide what type of propulsion to use for the spacecraft. the technology is advanced enough that humanity has invented particle shields and functional coilguns and railguns, but ftl and gravity manipulation have yet to be invented, and the most powerful method of power generation is a fusion reactor. im kinda torn between fusion thrusters and those new plasma thrusters nasa invented, any thoughts?