That 13 Inch Retina Pro

I bought a 2013 Air 13 to replace my 2011 version of the same device and was planning on buying the same for my wife to replace her 2009 Pro 13.

Now the 13 in retina comes out and it seems a hell of a lot more for only £150 extra

Got to ask if the 500g weight saving and extra battery life is really worth it,