our hands-on impressions, the new Z-series laptops from Sony are in many ways impressive, but in ultimate thinness they leave a bit to be desired. This is perhaps best demonstrated best by Journal du Geek's comparison shots here with the MacBook Air. Sure, the Z wins all over the place on specs, with Centrino 2, discreet graphics, a full-size laptop hard drive bay, and what was that? Oh yeah, a Blu-ray drive. The Z also manages a smaller footprint, thanks in part to a smaller 13.1-inch screen in that shorter 16:9 aspect ratio, but also due to its slim bezels surrounding the screen and keyboard -- something the Air could do well to take note of -- but the actual 1-inch thickness seems dramatically fat compared to its ultrathin competition. Overall, it's all about what kind of laptop you're really gunning for, but if thin is the ultimate goal, you're going to be much better off with the X300, X200 or Envy 133 on the PC side.