I'm told that for the first time ever, the new release of windows is lighter than the release it is replacing. If that is the case, I think Windows 8 is certainly a worthy buy if priced right (I am hoping for a Windows Vista Basic type Rs. 3500 INR pricing for the cheapest version's OEM edition)
Its cheap because they want to sell you the controlled marketplace experience and a closed system like iOS. Upgrade price to 8 is dirt cheap for any windows OS yet , they want record people to be a part of the OS having a marketplace where MS will get the royalty for every software sold, even to put something which is free on the market you have to pay for yearly dev licence. If this continues, Windows 7 will be my last windows OS.
Hello to other open systems !