Hyde is correct, your choice of capital ships are not to blame for having trouble with remnants, it’s how you’re using them. Unless you’re doing some sort of special challenge, picking between the big anchors of onslaught, paragon or legion are all pretty similar in impact at the end of the day.
Here’s a good way to build paragon though. This isn’t ’the Best way’ it’s just a build I made up on the fly that should work for whatever build you’re doing in your fleet.
Officer - target analysis elite, energy weapon mastery elite, ordnance expertise, gunnery implant, combat endurance, field modulation elite
2 autopulsers in the hardpoints, 2 ion beams in the front medium energies, 2 Hypervelocity Drivers in the universals, 2 tachyon lances in the side turrets, 2 phase lances in the rear mediums (they kill fighters and scare frigates). Mining lasers in the small energy mounts. Ideally no pd at all besides 1 mining laser. Just tank missiles on the shields.
This is an overload of emp damage but remnant are likely to have elite damage control. Having target analysis elite, tachyon lances and ion beams increases the chance you flameout your target before it escapes, especially good against nova and radiant.
Extended magazine, Accelerated shield, stabilized shield, hard shield, advanced turret gyro, flux distributor hullmod, maximum vents. You probably have OP left over for more stuff like armored weapon mount and reinforced flux conduits, especially if you use smods. Smodding stabilized shield, flux distributor, advanced turret gyro, expanded magazine or reinforced flux conduit are all good ideas.
Heavy Needlers are a great alternative, but HVD is probably a safer choice if you aren’t the best at commanding the position of your fleet ships. HVD more likely to help extend the paragon’s reach of impact. Same idea with the ion beams - ion pulsers or phase beams in front work too but ion beam is the safest bet.