This is my second IKEA chair in the GBP170 to GBP220 price range - I don't remember the name of the previous one which I purchased in 2002 and continued to use until late 2011. The old one has been relegated to "guest worker" chair after a refurb of new wheels. The seat padding could do with replacing/recovering but it's good enough for 2-3 hour sessions.
I work from home full time so my desk chair gets used in anger for at least 8-10 hours a day six/seven days a week, also I'm a fairly large 6' bloke so they do take a pounding. I've had the Volmar for two and a bit years now and so far it still feels like new.
I'd love to try a Hermann Miller Aeron or a Humanscale, but there isn't a stockist nearby where I can go and try one before committing that amount of money.
[1]: http://www.ikea.com/gb/en/catalog/products/S89895086/#/S8989...
I used to use those cheap vinyl office depot chairs and they are just too plush to be good for extended sitting periods. They also tend to break down after a while.
In our office, I bought a ton of used high end furniture from a dealer in San Jose who buys them from Apple/Cisco, etc. when they upgrade. We got everything for about 20% of original price and they steam clean and delivered to our office. We're using Knoll Life chairs and a mix of Herman Miller Mirra chairs, both of which I like a lot.
http://www.containerstore.com/shop/desks/deskChairs?productId=10022641
I had purchased a nice office chair from COSTCO previously, and as much as I love COSTCO, I absolutely hated the chair. I think it single handedly led to some RSI and constant headaches. After some research, picked up one of these and I'll probably never use another type of office chair.It allows me to slouch all day, which is about my only requirement. I prefer to face the world at about 45 degrees.
It's not very comfortable.