Are cheap dual monitor arms like HUANUO and VIVO good enough, or do you need an Ergotron?

For typical 24–27" monitors at moderate weight, verified-purchase reviewers and community threads broadly report that budget arms from HUANUO and VIVO work well for daily use. The recurring caveats are minor wiggle, mediocre cable management, and occasional sag with heavier or larger panels. Reviewers who run dual ultrawides or who prioritize rock-solid stability over years of heavy adjustment tend to favor Ergotron's LX line despite its much higher price.