I bought these monitor arms a few days ago, and they have been pretty good! The range of motion is excellent, and the installation was quick and easy.The only thing I will say, is I advise against buying these if you have your desk positioned against a wall and are looking to have both monitors horizontal and lined up, you will not be able to achieve this as the arms won't be able to go far back enough and line up properly.So far, 9.5 out of 10.