I've been using the chair for the past week, averaging seven to eight hours per day because I now work from home. I feel quite good after a lengthy day of sitting. Overall, I was extremely satisfied with the chair

I have an older model (~8 years) and one of the wheelbase arms broke off. DXRacer was responsive to my email question and told me which base would work with my model. If you're looking for parts, the links can be found in the FAQ question: "If my chair's warranty has expired and I need to purchase corresponding parts, what should I do?"

Overall quality is good & it is packed well w/good instructions, arrived via FEDEX quickly. As a 6'3", 260lb, man who spends close to 12 hours at his computer (between work and live streaming) I have to say this is pretty comfortable.