Price is key
Personally, I think the Windows RT version has limited appeal - might as well get a cheap Android tablet or the "real tablet", the iPad. What good is Windows that doesn't run Windows programs? Does anyone actually want this?
The Windows 8 Pro one sounds interesting, basically a (hopefully cheaper) and smaller "transformer" ultrabook, but if the pricing is more than the iPad... whooo. Early adopters will get this for the cachet, but I already haven't bought an iPad because of the price vs risk on a Tablet that is limited in what I can do. My pricepoint on tablets is --
Opera 11.1; Windows XP Pro SP3;Intel C2Q6600; 3GB DDR2 1066; 1M/128k DSL; Comodo Internet Security 5.3;Proxomitron 4.5j Sidki 2009-06-06,GPG ID:0x0A1C6EE3