Picked it up yesterday. For some reason UPS did not load it onto their van, so I went to their depot in North London to pick it up, then traversed to West London on the tube with the huge box which was fun.
Really impressed, super fast, looks amazing and using a machine that is dead quiet makes a huge change from the Antec 1200 and a billion fans.
Not sure of the mouse, feels a bit meagre, so trying out the touchpad to see how I get on.
Screen is beautiful! OSX Mavericks was also preinstalled and got all the Pages etc for free.