I starting checking for any of hte issues that others have reported: I used a pixel checker, and both the 30" ACD and the 15.4" LED matte screen are perfect. All the keys on the keyboard (including the power button) seem aligned correctly. The trackpad button feels great, not hard and "crunchy" like my powerbook was for the first few weeks I had it (it eventually "broke in" nicely). When closed, the screen aligns nicely with the base. Both corners have about the same amount of clearance. Now I'm working on calibrating the battery and trying to figure out how to calibrate the display. Is there anything else I should be checking for?