Profile's Largo bar uses double-butted 7075 aluminum to make a lightweight handlebar that maximizes stiffness for sprinting and climbing. A wider center clamping area easily accommodates clip-on aerobars and the extended reach means there's no compromise between an aerobar or in-the-drops position. The Largo is also shot peened and anodized for added strength and durability and offers excellent comfort due to its ergonomic bends.
Which Reach and Drop you prefer depends on your hand size, arm length and riding style. If you like what you're riding, simply match it as closely as possible. In general, deeper drops and longer reaches are appropriate for riders with long arms and large hands while narrow drops and short reaches fit smaller riders. Handlebar Width is related to shoulder width. Riders usually prefer a handlebar width equal to the measurement between their shoulder blades, or slightly wider if they climb a lot or ride fast and hard.