Biomorph Flexo Level3

Best for Sore Backs

This curved desk is ergonomically designed so that papers and folders are always within arm's reach. When it's time to shift between sitting and standing positions, the dual surfaces – one for a keyboard and one for a monitor – operate independently, giving you almost unlimited combinations of the two. A more expensive, motorized version is also available. [From $2,355; biomorphdesk.com]