Monitor arm recommendations? (looking for one with a spring)

Hello Lemmy / FOSS / Hardware community!
I'm looking to buy a monitor arm. Any recommendations? Good brands?

• I want it to have a spring
• I'm prioritizing quality and durability

Context:
I have a monitor arm already and I love the concept. However, it's a 50 EUR (~=60 USD) "static" monitor arm and I want to upgrade this part. I know some monitor stands / monitor arms allow easy on-the-go adjustments of the height and angle. Which monitor arm to buy to have this feature? Recommendations? "Negative" recommendations (e.g. what not to buy)?

I have a single 6kg monitor + a notebook that can be left on it's static arm on the side.

I appreciate any feedback on this
Thanks!