I have this chair as well but I am not enthusiastic about it. It's cheap and OK but nothing more. The armrests are not adjustable and the headrest is really a pain.

Do you lower the chair so much that the armrests fit under the table or do you just not sit that close to the table?

I've owned two of those. They are very comfortable. But the back of the chair ended up breaking off at the base both times.