The Dell XPS 15 laptop is being reviewed by various outlets, with some highlighting its competitive features and power efficiency, while others note its imperfections and limitations. Some reviews also compare it to other models, such as the XPS 13 and XPS 17, and consider its upgrades and changes. The overall assessment of the laptop seems to be mixed, with some considering it a great or powerful device, while others find it to be imperfect or faltering in certain areas.