I purchased this chair because I needed something comfortable to sit in while working from home all day. My previous chair caused me horrible back pain. And this chair had mostly good reviews. There were some indications that the arms weren't fully secure but some people have the solutions that they used so I thought I'd give it a try.
I've had the chair about two months. Of course sitting in a desk chair for 8-10 hours a day isn't ideal for the body, but I don't suffer every day (and night) like I had previously. It's a pretty comfortable chair. The chair is as it was when I bought it except yes, the arms have gotten a little wobbly. It's likely because I shift in the chair every now and then and use the arms to do so. It's not a big concern for me and when I get some time off work I'll probably take them off and use the solutions that were offered in the other comments (Glue or lock tite if I remember correctly) to tighten them up. The chair is otherwise we'll made and I'm very happy with it.
The pillow is a nice touch for neck support when you lean back. The wheels roll nicely, considering I have carpet in my office. The foot rest is a nice touch as well though I don't use it often due to my desk not being all that compatible with it sticking out. That's also not something you would put too much weight on. It reclines nicely too but I don't use that either. I do put a throw over the seat when I'm wearing shorts as the leather like fabric makes your legs sweat. All in all it's a great chair, comfortable for work, which is what I needed it for. My kids would love this for gaming, and I'd consider purchasing one for them as a gift.