This lamp was great for the first 6 months. Then the LEDs on one arms started flickering. After about 9 months occasional use (maybe 5 hours per week), the LED's flicker and are all very dim. It seems to be a design problem with the arms or the switches, as sometimes with a lot of wiggling, I briefly get the original full light.
So it's either a really terrible LED with a short life that K&M have implemented, or really shoddy goosenecks or switches that don't live up to average use. 5 stars after 1 week's use, 0 stars after 1 year's use.