I've been using a 110 pounder for several years now, and I'd love to have one a good bit bigger. Mine has good rebound and works great for forging blade profiles and bevels in flat stock with smaller hammers (less than 3 or 4 lb.s). It tends to bounce a lot when I use a heavier hammer. Still, 60 pounds is better than no anvil at all. Just be sure to anchor it to something heavy.
Todd