Picked up one of these about 4 years ago and when we needed another one I was thrilled to see that the Hyken was still available. It is quite comfortable for all day sitting and holds up well - The 4 year old chair looks almost identical to the brand new chair! Tip: If you are rolling around on wood floors you may want to pick up casters specifically for wood floors - shouldn't cost more than $10 or so...
I've been looking for a new office chair for awhile now. I had been considering the Herman Miller chairs but well they're freakin expensive! I figured I'd give this a try since it's 'kinda' similar to the Aeron chair. I also figured I could send it back after test sitting a few days. Suffice it to say my fat butt is firmly planted and will continue to do so. Yeah get this chair!