I'd say go with both. Most players use Berserkers and Plague Marines as both work well together (the Plague Marines pick up the Zerk's slack when it comes to shooting where the Zerkers make up for the Plague Marine's slowness in combat), but Noise Marines and Plague Marines are complimentary as well.
Noise Marines are quick in close combat and have access to weapons that excel at shredding light infantry and can do quite a number on heavier troops as well. With a Blastmaster, Noise Marines become an unholy terror for infantry of all kinds. Noise Marines are also quite good at dishing out pain while on the move since all sonic weaponry has a mode that allows the weapon to fire as an Assault weapon. Noise Marines are also good at taking objectives. An Aspiring Champion with a Doomsiren can kill a ton of Space Marines in a turn and because of their high Initiative excel at assaulting into cover.
Plague Marines are hard as nails and can be equipped to deal with even the heaviest vehicles. Their basic armament gives them a minimum of anti-infantry ability as well, and since they have Blight grenades Plague Marines are good at receiving charges.
Basically, you can use Noise Marines to clear objectives and Plague Marines to hold them.
Noise Marines are quick in close combat and have access to weapons that excel at shredding light infantry and can do quite a number on heavier troops as well. With a Blastmaster, Noise Marines become an unholy terror for infantry of all kinds. Noise Marines are also quite good at dishing out pain while on the move since all sonic weaponry has a mode that allows the weapon to fire as an Assault weapon. Noise Marines are also good at taking objectives. An Aspiring Champion with a Doomsiren can kill a ton of Space Marines in a turn and because of their high Initiative excel at assaulting into cover.
Plague Marines are hard as nails and can be equipped to deal with even the heaviest vehicles. Their basic armament gives them a minimum of anti-infantry ability as well, and since they have Blight grenades Plague Marines are good at receiving charges.
Basically, you can use Noise Marines to clear objectives and Plague Marines to hold them.
