The seldom used but unbelievably powerful... POWER CODPIECE Nothing like thrusting your enemies into oblivion FOR DA EMPRAH!
Combi melta bolter for ranged best of both worlds and a good old frost axe chain weapon version again its got the best of both worlds oh of course I'd have to have a chain bayonet on my combi melta
Probably because it's not as common and most people aren't use to the looks of it. That's what I think.
I'm going to have to go old school (Rogue Trader 1st edition 40k)on this one: Multi-Melta with enough suspensors to move and fire it mounted on the right arm. Power shield with close combat adaptation on the left. If you want me to use more modern gear: I would still go with the Multa-Melta, with suspensors for ranged. Power sword and combat shield with built in bolt pistol for close combat. As for a Terminator loadout: Plasmablaster right hand Chainfist left hand Or anything Grey Knight