Just a quick request for opinions before I buy: I can get the Surface Pro 3 64GB/i3 for £539 and the 128GB/i5 for £669 (both after cashback). http://www.microsoftstore.com/store...12300?icid=Surface_Pro_3_surface_nav_22102014 Do you think it worth the premium for the faster processor and extra storage, given I don't have a huge amount of money to play with? How much do you think the minimal spec'ed model will hurt usability? I think I have an idea what to do, but I'd really value a second opinion before spending that much money. Thank you.