If you prioritize highly customizable ergonomics and don't mind a slightly higher price, the Marsail chair is ideal. You're a user who values precise support, benefiting from 3D armrests that adjust for height, depth, and pivot, alongside a 2D adjustable headrest. The height and depth adjustable lumbar support is crucial for your comfort during long work sessions. While its 300 lbs capacity suits most, its comprehensive adjustability makes it perfect for those seeking a tailored fit for their upper body and arms, even if recline is limited to 120 degrees.

The TRALT ergonomic desk chair is best for users who prioritize a higher weight capacity, stability, and value. If you need a chair that robustly supports up to 330 lbs and appreciate a durable metal base, this is your pick. You're likely on a tighter budget but still require effective lumbar support with 4 cm of depth adjustment. You don't need extensive armrest or headrest customization and appreciate quick assembly. Its quiet casters are a bonus for shared spaces, making it a reliable, no-frills workhorse.