Hello Freepers, I am looking to buy a new office chair and was looking for recommendations/suggestions, and endorsements. Advice about chairs to avoid is welcome too. I don't have any odd requirements to speak of. I just want a chair that swivels, rocks and has some height adjustment. I am about 6'3", and weigh 207 lbs so I'd probably want a "big/tall" version.Obviously I want comfort and good ergonomics. I posted this in the "computer" topic because I figured those of you computer guys/gals that spend copious amounts of time in front of a machine would have unique knowledge. Also,...