Office Chair

In the spirit of the preferred pen thread, who's got a good recommendation for an office chair? My home office chair just isn't cutting it. Looking for something that accommodates a good sized frame, 6'1". Mild lower back stuff from old sports injuries/surgery. What's everyone using?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Psychology [Psy.D. / Ph.D.] Source Type: forums