@sabroni "windows 7 on a touch screen device? Anyone with real experience of that?"
Yes, I had an Acer W500 with Win7 preinstalled and lived with that for about 3 months until they released the build version of Win8. The experience of Win7 on a tablet is not to be recommended (although it is of course a fine desktop os). The W500 was very painful with Win7 on board for all the reasons you might anticipate, installing Win8 made it at least usable despite the C50 cpu and the limited amount of RAM (2 Gb). If you do have a user case for installing Windows on a touch device, make it Win8.