Use either of the neutral-grip handles to put your arms in a stronger position. While you'll be able to use more weight, remember that your arms bear some of that extra weight. When you use the narrow grip, your chest also does some of the work. Keep in mind the extra muscle involvement, and don't make these neutral-grip movements the only back exercises you do.
A wider-than-shoulder-width false grip cuts your range of motion slightly but helps you feel the exercise more in your lats and less in your arms.