I use this mount in my home office and couldn't be happier. They're built like a tank and I have no doubt I'd probably be able to put on much heavier monitors than the ones I'm using (Adam Audio T7V).
The swivels from side to side as much as the monitors permit, which is great for easy access to the back of the monitors - mine have switches and plugs there.
The only complaint I have is the lack of any kind of mounting hardware, but for the price, it's not a big deal, and I found suitable ones in my local hardware store.
Highly recommended.