I'm not Samtb, but I can tell you why I'm returning an 11" MBA that I bought as a portable second laptop: the display. I love everything else about that machine, but it's just too...I'm not sure what the word is, maybe annoying?...to go back and forth between retina/HiDPI IPS displays and the TN display in the MBA. Call me fussy, whatever. I spend too much of the day looking at displays...I thought it wouldn't bother me, but I think I was wrong.
Same for me technically a high end 11" Air would be the perfect choice, however the display simply kills it for me both the aspect ratio and the poor TN panel. Not solely the increased resolution, the vastly improved quality of the Retina panel and of course scaling is a huge benefit.
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