DESC: OptiPlex, Dell's long-standing corporate line, is already known for easy upgradability and manageability and for having a stable platform. And it keeps getting better. The latest model, the GX260, comes in three flavors: mini-tower, desktop, and small-form-factor. The mini-tower always stands upright, while the desktop and small-form-factor units can either stand on end (with the help of plastic stands) or lie flat beneath their monitors.