Hey guys. I'm thinking about getting a monopod. The reason I want a monopod over a tripod is because tripods are annoying to have to lug around, especially when I might need it for only a shot or two. Monopods look a lot lighter and easier to carry around. I want one to stabalize the camera to get shots like birds in flight while in low light. I've missed a lot of really nice low light shots because the shutter speed was too slow and I had camera shake. But I've looked a monopods and I can't tell what the difference is. I've heard that Manfrotto is a very good brand, but they have many different monopod models, 790B, 679B, 681B. What do I do?