Personally, I like binocular over monoculars. The disadvantage I see of monocular is if you're going to be viewing for a long time. Like scanning a mountainside for sheep or something. Eyes like to work together. So using only one stresses the eye and may cause you to have headaches and such.Hi Everyone, a quick question here. What's the difference between a monocular and a binocular? Secondly is there any reviews out there that you can suggest please? Thanks a million!