Looking for a tripod head that will support even a jumbo 25x100 binocular? If I had one of those beasts, I would go straight for the Bogen 229 Super Pro head, then add a basic leg set, such as the Bogen 055XDB. A tripod head this large will prevent that dreaded mount sag - when you center an object in the field of view, then lock the head, it will stay put, instead of dropping out of view as the tripod head flexes. Makes life much easier when using giant binoculars. A light tripod and a 25x100 binocular is a match guaranteed to frustrate. Lots of reasonably priced 25x100 binoculars, these days, but they are only a good buy if you spend the money on a proper tripod.