I own a 223 Samsung 120htz. FPS's are smoooothhh.. But the benefits may go unnoticed unless you play competitively or at a high pace. COD really won't see the benefit unless you're a high sensitivity player; it'll prevent screen tearing.
I'd go with the dell. Simply for the better colours and reliability. 120htz is fun for 3d, but a gimmick the same.
I'd go with the dell. Simply for the better colours and reliability. 120htz is fun for 3d, but a gimmick the same.