This one is a little over budget , but will not need any significant upgrading any time soon ( except maybe memory to 16Gb )click here . THis one is cheaper and easily inside your budget , giving you plenty of room to upgrade in the configurator click here . I would recommend upgrading the memory to 16Gb , the PSU to the 650w corsair , the MoBo to the MSI gaming board ,and if you can manage it , the i7 4770k CPU . which would take the rig to just under £1400 .
Surface Pro (2017) vs Surface Pro 4