Tried on my laptop with each of the preview releases. I boot into the copy on my desktop about once a week to check for patches and see if they have fixed whatever is causing the constant freeze ups I am experiencing (they haven't) and spend the rest of my time in 7. I did not have any of the constant pauses/freezes during the CP/RTM testing I did, yet the final product does not seem to work. Other than that, while I do like a handful of the improvements, Metro continues to be a piece of crap for non-touch interfaces and my desktop is effectively unusable while I am booted into Windows 8.
Every article I have seen espousing the merits of 8 and the Interface Formerly Known As Metro seems to offer more complicated ways of doing the same things we use the Sart menu for now. I will grant that I do not often go into the Start menu as most of the programs I use regularly are either pinned to the taskbar or have shortcuts on my desktop. However, I have found the Start menu to be much more useful than the IFKAM whenever I have need to use them.
Conclusion - Metro on a touchscreen device fine, it is well suited to them. But return the Start menu for keyboard-and-mouse centric devices.
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