I wasn't quite clear about this. At the time I posted it (October last year) I had not purchased a tablet running Windows, I was just considering it. I had my Galaxy Tab 2 and my wife had an iPad2, plus our two Toshiba laptops, and I was interested in getting a Microsoft-based tab also.
I have now bought a HP Elitepad 900 64G which was running Windows 8 Pro. I upgraded this to 8.1Pro as soon as it arrived. I can flick between Apps and Desktop, but I am having issues with the Desktop that are presently making it unusable. I put another thread on about this but haven't got any answers yet.