Usually non native resolutions are absolutely horrible on an LCD. I was not even remotely interested in the rMBP because the working resolution is effective 1400x900. There's no way I want to take a step back from 1680x1050. So I trekked down to my local best buy to see how the resolution scaling looks in person. Suffice to say that 1920x1200 looks very very good on this screen. I played with it for about 10 minutes and I blown away. I wasn't even thinking i'd buy one at all, yet now Im thinking of ordering one to run at 1920x1200 permanently. So if you have doubts about 1400x900, this thing will actually be useable at different resolutions, so go check it out before writing it off.