Work Comfortably In Ergonomically Designed Furniture

As you know, the other day, I bought a writing desk. While I think its value for money, it's not what I ideally want. It would be awesome if my OFFICE FURNITURE were ergonomically designed!

You know the long hours I spend slogging at the office, I NEED something that would be good for me physically and ergonomic furniture are especially made to help us work more comfortably.

I was surfing the net and came across these ergo-furniture. How good it would be if THESE were in my own office. I would then work happy and not complain so much about back ache for sitting too long in front of the computer LOL