This is my first full day with 8 but here goes:
As a home use OS it has potential if understood but I do not see it as a good replacement for most people. The metro interface looks fun but all in all that in itself needs to be poked and prodded into submission. Sorry guys I'm just a lowly technician but I can not for the life of me see my clients trying to acclimate themselves to this. And even the more advanced settings are hard to get to. If I can barely navigate it how can my clients? Hell I spent four hours training a teacher on how to use her smart board and calibrate it should I not be there and that was simple. I can just picture endless calls at two am "How do I get to my downloads again?" Microsoft ether blessed me or cursed me Im not sure yet lol. And I mean it they WILL call me... all... the ... time unless I convince them to stay away from this hot mess til microsoft gets over its midlife crisis!
For a tab its alright but even then I can see it hogging the battery life like crazy if they arnt careful. The only advantage of having a Windows tab is for home groups and networks. Windows plays nice with windows. Asside from that this is a no go for me. Sorry.