How do you find a good chair? I personally want to try a chair it before buying it. But I find all the local stores have cheap chairs that last a year or so.
I've been using Herman Miller for the past 5-6 years or so and they're just great.
I also have the first one and now having seen the second - I want it, too.
This is what I have. I had a Mirra, Aeron, and Steelcase Leap.
The Mirra was fine, nothing special.
The Aaron was horrible. Yes, I had it fit for the right size.
The Steelcase Leap and Embody are both top tier. You can almost argue the Leap is superior since you can get it in leather, making it easy to keep clean and free of stains and you can get it with a headrest.
They also make a Leap Lounge and it's sublime. I wouldn't mind the Herman Miller lounger though.
Either way, you can't go wrong. You have to find out what fits you best. Many rave and swear by the Aeron, but for me it was terrible and uncomfortable. The Embody and Steelcase Leap are sublime to me though.
The chair is some sort of easy to try: you just go and try it. Choosing a bed and pillow is not that easy - I've thrown away a couple of pillows that seemed fine in at the beggining but were actually unbearable to sleep on.
As for the cheap chairs - you get exactly what you've paid for
For relaxation: http://www.hermanmiller.com/products/seating/lounge-seating/...
disclaimer: I have the first, I want the second ;-)