Review on ErGear Single Monitor Mount Stand - Adjustable Gas Spring Arm Desk Mount with Swivel VESA - C Clamp & Grommet Mounting - Fits Most 17-27 Inch Flat Curved Computer Monitors - Holds up to 14.3lbs by Sean Spence

I have a 27 inch Samsung monitor on this arm and it holds it like a champ. I had to tighten the upper neck joint fairly tightly to keep it from leaning forward, but I can still move it. and make adjustments if necessary. I'll admit the monitor I installed is a bit heavier, but this arm holds it up well. The cable management is a bit tight if you're running more than just power and video cables, but it holds up better if you squeeze it a little tighter. The fact that the cable management covers are held in place by a screw instead of clips makes it a lot easier to handle a tighter grip.