Very sturdy metal product, easy installation-assembly, the screen remains stable in whichever position you choose, however adjusting the height requires relatively great force even when the mechanism is unlocked, so it is not recommended if you want to make frequent changes to it, the rest of the position changes are easily done. Also, the screen rotates around its center if you want to turn it 90 degrees.

To make sure it fits what you want to do, pay attention to the dimensions of each arm, I would have liked them to be a click longer in length.

Used for a 24-inch screen.

Very high-quality materials, sturdy construction. It also has extra hooks for connection to a hole in the desk. It also has small clips for cable management (don't expect anything amazing). For those who want to place their monitor behind their desk, to gain more distance, for example, if they have a narrow desk - it doesn't work because it only reaches the straight line of the metal base.

Stable and quite large base, which is either screwed or with a hole on the surface of the desk.
The entire frame is metallic with small plastic parts. It provides satisfactory height and rotation angles vertically and horizontally on the screen. Integrated ring and option for hiding cables next to and below the horizontal parts of the arm.
Assembly instructions are relatively simple and overall the product appears to have a solid and stable construction so far.
Just pay attention to the technical requirements in order to cover your screen (maximum screen dimensions and weight).