I am actually playing around with rMBP base model. Here are my first impressions: * Indeed, the retina is gorgeous , but there is too much light in the store and I am noticing the glare as if it were the classic glossy model. I wish I could test it in a more controlled environment. * I have downloaded and tested Retina Display Manager. The HighDPI 1440x900, 1680x1050, 1900x1200 are fine, but the native 2880x1800 is too small to be practical, at least for me. * Regarding the lag issue, I can reproduce it systematically by opening more than 12 safari windows, and display all Safari's windows. The lag is very noticeable in 1440x900, 1680x1050, and 1900x1200. With 20 or more Safari windows, I have seen the spinning wheel!. The lag disappeared when I switched to native resolution. Cheers.