I did not spend a lot but I could not find to way to shut down the machine there was no button for shut down or restart at least I could not one. Not to mention the way to back to desktop is like a playing a game and I am sure some of the older folks are going to struggle with this a lot.
Over it was fast responsive till you started to work, I don't think it is Windows 8 problem but not all apps are mature yet. Almost every App I tried which was not a program on windows 7 ,,had a glitch or died on me...
I still like it especially for touch based devices I think the interface is really great and might click with lot of users ...kudos to Microsoft for that....
More details to come soon ....