Mich have both 1- and 2-star reviews some surprise: there is talk of shaky and plastic arms etc - I have this light a few weeks now and am quite happy with it, neither shaky (okay, the design is not made of cast iron and of course, "moving", the part with the thin arms quite like ...) but especially the arms are in my light metal !! Even the table base is heavy and stable and the light fits with base and / or terminal exactly together! The light can be adjusted well (height, length) and the switch is virtually placed.
To me it looks like this, as if there were different manufacturer of this lamp and I can imagine if someone buys an office luminaire of mouth, he also expects corresponding quality. The origin of the light (s) should perhaps be reviewed ...