I didn't realise that heavy-duty monitor arms were hard to come by at such reasonable prices as Ergox. However, looking for an arm that can hold my Samsung 49inch monitor proved to almost break the bank, and theres a lot of uncertainty sometimes whether websites that claim their arms can hold the monitors as big as 49inch curved really can at cheaper prices. But after having Ergox for a week, i haven't noticed any lack of quality. My monitor arm works perfectly, fits the VESA mount for the monitor, and holds the screen perfectly hovering above the desk. I did need to adjust the tension of the arms to get the screen to stay up, but after that it hasn't moved. Very happy with the price and quality.