I model quite a bit. Sometimes 10 hours a day. I have foundthat over time it is fatiguing because I have yet to find a chairthat really suits me. It seems I am always on the front edge of mychair hunched over on an elbow. I key with my left hand exclusivelyand mouse with my right exclusively. I feel like I want a lessreclining but very comfortable type chair.SolidworksGeneral