CPM-440V is one of the state of the art tool steels now used for high end knives. It is not only more expensive but noticeably harder to work. There are a few other powder metal steels that will give similar performance but none that are measurably better at edge holding.
Kershaw's Ken Onion designed Boa (model 1580) has handles of 6061, an aircraft alloy of great strength and durability and utilizes Ken's SpeedSafe™ Torsion Bar Technology opening. The surface of the handle is dimpled then completed with a black anodized finish. A special black titanium finish completes the 3-1/2" blade. Measures 4-1/2". The liner locking leaf is 410 stainless. Made in the U.S.A. Includes a pocket clip. Weighs 4.5 oz. Suggested retail is $185.00.