With 40-400X magnification for such a low price the MicroBule monocular microscope with robust construction and optical quality, this is a great microscope for the student or hobbyist. Made in the Netherlands.
For serious microscopy work, look no further than the saxon RBT Researcher Biological Microscope. This beast of a microscope features a trinocular head, four objectives of 4X, 10X, 40X and 100X, individual eyepiece focusing, double-layered mechanical stage and coaxial coarse/fine controls to make it easy to operate the stage when you're viewing your object through the eyepiece. This microscope promises versatility and durability for use at work, school or home.