I'm looking for an adjustable desk monitor arm for a 43" 22.3 lb Sony 43X800E. Ergotron LX HD Sit-Stand Desk Arm: https://www.ergotron.com/en-us/products/product-details/45-384#/ It supports up to 46" 30 lb monitor. Newegg has it for $242. Huge adjustable range. Ergotron HX Desk Monitor Arm: https://www.ergotron.com/en-us/products/product-details/45-475#/ It's rated up to 42" and 42 lbs. The Amazon reviews say people are using 43" monitors with it. So, I hope it would work. Provantage has it for $204. Humanscale M8 Monitor Arm: https://www.humanscale.com/products/product.cfm?group=m8 It supports up to 40 lbs. But, it's more expensive at $399. Any other suggestions?