I thought I'd give a medium term review of the Humanscale Freedom. I've finally got a desk in my office room and have been using the chair full time for a week. Firstly I still have reservations about the design flaw (my opinion) of the arm mechanism. I still think it will fail long term. For that reason I am still reticent to recommend it. But having used it for many hours now I do love the chair.
I've read reviews saying the base is quite hard. It is a little. But I've been using it for about 12 hours off and on today and it's only now started to feel a little hard. My herman Miller Aeron at work is definitely more comfy on the bum cheeks. But it's certainly OK for general home use. I've also read review saying the back doesn't give quite enough lower back support. Yes this is true to an extent too. I'd prefer a littl emore support on the lower back. But it's not enough to be uncomfortable and no doubt this can be fixed with a cushion if it was an issue. I'd say the arms are just very slightly wider than I would like. But I'm a small person and this is unlikely to be a problem for most people.
So far it sounds pretty negative. But the above points are minor for me. There are four things that make me very happy with the chair:
1) It does look great.
2) I find it very comfortable (notwithstanding a few minor points above when using all day).
3) While I am worried about the long term strength of the arm mechanism, they are working fine right now and they really do work well. Because they are so easy to adjust I have found myself adjusting them quite frequently through the day. Sometimes I want them higher. Sometimes I want them lower. Sometimes I want to fold them completely away. With other chairs I don't bother adjusting them. But because these are so easy to move I do actually change them through the day.
4) On just about every office/desk chair whcih I have used, I have just adjusted the back to be almost straight up and left it (similar to leaving the arms in place in the comment above). I then slouch in the chair over time. But I
adore the recline facility on the chair. For example I was working this morning, bolt upright, and then leaned back while still typing. Tonight I was playing games bolt upright and then leaned back to watch some youtube. The killer feature of this chair, apart from the easily adjustable arms, is being able to lean back and the head and neck support moves forwardto support you. Unlike other chairs your head is supported while still facing towards the screen when you recline. I love it. I'm currently sat here, reclined, but still looking at the monitor, head supported so my neck doesn't ache, typing and sipping a beer
So, while I still have reservations about the long term durability of the arms, I currently love the chair and it is exactly what I was looking for.