What is the best and most comfortable office chair for long hours?

Hey everyone, I really need some guidance here. I spend long hours at my desk, and my current chair is killing my back. By the end of the day, I feel stiff, sore, and completely drained. I’ve realized that I need to invest in a high-quality, ergonomic office chair that offers great support and comfort for extended sitting sessions. But with so many options out there—mesh, leather, high-back, adjustable lumbar—I’m feeling overwhelmed. I don’t want to make the wrong choice and regret it later. What is the absolute best and most comfortable office chair for long hours?

While searching online, I came across this post that seems to list some of the top-rated and most popular office chairs:

https://high-quality.tools/best-most-comfortable-office-chair-for-long-hours/

It looks helpful, but I’d really love to hear from real users—what do you personally use and recommend? Have you found a chair that truly makes a difference in comfort and posture throughout the day? Any insights would be super helpful!