To be honest these surface tablets look impressive.
However for me personally I have no need for a full Modern OS
( Apple or windows )on a Device that does not have the hardware power to run Full versions of my professional 3D/CG animation & Visual Effects software
such as Autodesk Maya or Adobe after effects or SideFX Houdini
That is why I am staying with a "mobile OS" like android/IOS.
for my tablets and keeping my real production work on a "real" Computers or Laptops