Of course, things are different with the Retina display where you can actually scale UP as well as down the resolution. The extremely high 2880x1800 resolution doesn't give you more desktop SPACE, which higher resolution monitors usually do, because of the "Retina" effect that essentially packs all those 5.1M pixels into a 15" display with a WORKABLE resolution of 1440x900. This pixel doubling gives the effect of the higher ppi (pixels per inch) and that's what makes it so incredible looking.
At any rate, OS X lets us INCREASE this 1440x900 resolution ("for lack of a better explanation") to 1680x1050 and even 1920x1200, which does give us more SPACE, so my question is about the QUALITY of the scaling/rendering of the higher resolutions of the Retina display. Meaning is the picture as beautiful (or almost as) and is the text as sharp as with the "native" 1440x900???
Basically, does the Retina display look as gorgeous at 1920x1200 than it does at 1440x900? It all scales from 2880x1800, so you'd think that with the right software and GFX hardware, do I get my higher resolution/desktop space *AND* the beauty of "Retina" (or really really close to it anyway)???
Sorry for the long post...I'm so rrrrrreadyyyyyy to get a Mac!!! :-)