Pros: This is really well made. There is no part of it that can be called low quality. Everything is packaged neatly and logically. It has a myriad of major and subtle adjustments that allow you to bring your monitors into alignment. It is very stable and sturdy and I have no concern of it falling over. I have three identical 27" Acer monitors but I have no doubt this mount could handle much larger, heavier monitors.

Cons: The directions are really poor. They're a series bad pictures that offer insufficient detail to be of much help. Fortunately this isn't rocket surgery and there aren't that many parts or screws that figuring it out isn't a problem. A bigger issue is the fasteners to attach the monitor to the mount. The screws are all high quality and work perfectly but a series of spacers should be included the way the mount did on my TV did. Admittedly, this is likely only an issue with a very few monitors.

Overall Review: Yes, it's expensive but the dual columns and the high quality make me happy I bought this.