If you have heard of the Hyken but you’re on the bigger side or want a bigger chair get this. While I’ve only been using the chair for a few days I feel pretty confident that in saying it’s a ridiculous value and a good fit for those on the bigger side (I’m 6’2” and heavy). Assembly is straightforward (though if you have a hex driver rather than the allen wrench use it). It’s pretty simple in operation with a locking back adjustable arm rests and head rest. The only thing I can really knock it for is that I personally would prefer a more upright vertical lock on the back (it allows it to lean a little when locked). Great chair.
This is a nice moderately priced chair. The lumbar support is good and so is the headrest. The seat is able to be positioned not only up and down but also tilting forward/backward. I’m 5’2” and find this comfortable. Good seat depth and width. The armrest are ok - the go up and down but are not padded.
I started off my search for an office chair looking at the $1000 x-chair which I have never sat in. at $149 (on sale) I can't imagine what could be any better than this. Great chair very comfortable for sitting 8+ hours a day. Seems to be well made and should last for years. Highly recommend!