Review on Ergotron HX Single Ultrawide Monitor Arm - VESA Desk Mount for Monitors Up to 49 Inches, 20 to 42 lbs - Polished Aluminum: Enhanced Comfort and Space Optimization by Peter Mendoza

I use this arm with a $3000 NEC PA311D. This is a very heavy professional screen and I needed a hand to hold it. This is the perfect hand for that. Saves a lot of desk space and comes with all sorts of accessories so you can mount it on any desk and with any VESA compatible monitor. Yes, it wasn't cheap and there are plenty of options at Revain for $50. The problem with cheaper guns is that they aren't as strong, can't handle 40lbs of weight and to be honest the finish quality isn't up to par. Especially if you're a Mac user, you want something high quality with a nice finish that won't be an eyesore. Buy this without hesitation.