12x is a lot of magnification to hold steady. Some people can do it just fine, but most people are more comfortable with 10x or especially 8x. If you glass from a tripod a lot, 12x can be beneficial. The other issue is field of view, as it gets constricted with most high-magnification binocular models, especially the 12x Monarchs (262 ft. @ 1000 yards). In comparison, The Zen ED3 10X43 FOV is 340 ft. @ 1000yards, while the ED3 8X43 has a whopping 426 ft. @ 1000 yards. It is like the difference between looking through a picture window and a porthole.