How are your displays? Light bleed seems non-existent, and although I read that the display is 20% dimmer than the older ones, that is not really a concern, either, because the contrast makes up for it. But I'm wondering if any of you are noticing slightly dimmer patches around the lower edges? Mine seems that way ever so slightly on both sides but in particular on the lower left edge. It's really only noticeable on a white background and then only faintly so. Light a slight grayness, not yellowing. Anyone have any uneven lighting or yellow screens or slight gray areas on your display? I will check out the screens on the MBPr(s) at the Apple Store and see if it compares to mine. Other than that and the occasional creak or crack sound coming from the bottom aluminum case, everything is great with this machine and I'd hate to exchange it only to get one with a dead pixel.