I was actually disappointed seeing the rMBP for the first time. This is in no way iPad 2 to iPad 3 improvement. As some other posters have said, at a normal viewing distance it's hard to tell, especially if you are used to hi-res display. At 1440x900 there was a difference to be sure, but at 1680 or especially at 1920, nothing special. Coupled with really un-Apple-like responsiveness issues, the whole experience left me cold.