I loathe office chairs because despite their initial good looks and comfort, they are not durable. How companies not factor in this wear-and-tear into their chair designs is beyond me.
That said, I have designed what I feel is the one chair to rule them all. This heavy duty chair is a monster: steel frame, redundant wheels, shock absorbers, and tension springs. It is painted yellow to alert your co-workers of its presence; a trait symbolic of its construction equipment pedigree. Essentially a Tonka chair