I love my aerobars. Mine are over ten years old, so I'm sure there are improved models. I'd look at all of them and see what fits.

They are great for taking the pressure off of hands, wrists and elbows during long rides. I pick up 1-2mph as well because of the position and increased pedaling efficiency.

Never ever use aerobars when riding in a pack. Your ability to maneuver and stop is compromised. I only use mine when I'm riding alone. They are great for long stretches of roads.