Matto: pricier then the other.
Also, I am in contact with a machining firm, to take a round stock, of 5-8" of 4140 or 4340, cut it to length, roughly 100-150lbs and heat treatment it. I am waiting for a reply on price. My thinking is, my main use will be for knives, and shop tools. That way, I would only need a very small face to hammer on, and all the weight would be directly below the anvils face. Not out to the sides, or in the horns.